Browse top developer tools and platforms. Compare features, pricing, and reviews for building and shipping software.
201 tools
Tools in Developer Tools
airflow — Apache Airflow is a free, open-source platform for programmatically authoring, scheduling, and monitoring data and ML workflows as Python-defined DAGs.
archivebox — ArchiveBox is a free, open-source, self-hosted tool that archives websites, bookmarks, and social media posts as durable local files (HTML, PDF, WARC, screenshots).
Puppeteer — Open-source Node.js library maintained by Google's Chrome team that provides a high-level API to control headless or full Chrome and Firefox for automation, testing, and scraping.
Nestia — Nestia is an open-source TypeScript toolkit for NestJS that reads controller code and automatically generates type-safe client SDKs, OpenAPI documents, and mock API simulators.
Hoppscotch — Hoppscotch is an open-source API development ecosystem for testing REST, GraphQL, WebSocket and other protocols, built as a Postman alternative.
ECC Tools — ECC Tools is an open-agent-harness system that analyzes a repository and generates project-specific skills, rules, and security checks for AI coding agents like Claude Code, Codex, and Cursor.
gql.tada — gql.tada is a free, open-source TypeScript library that infers fully-typed GraphQL query results directly from your schema, with no code generation step.
Live Server — Free, open-source VS Code extension by Ritwick Dey that launches a local dev server with automatic live reload for static and dynamic pages.
IntelliCode — IntelliCode was Microsoft's free AI-assisted IntelliSense extension for VS Code, offering ranked and whole-line code completions.
Python Environments — Official Microsoft VS Code extension that unifies Python virtual environment and package management for venv, conda, uv, pyenv, poetry, and pipenv in a single UI.
bitmagnet — bitmagnet is a free, self-hosted BitTorrent indexer and DHT crawler with a web UI, GraphQL API, and Servarr stack integration for automated media libraries.
getleon — Leon is a free, open-source, self-hosted personal AI assistant supporting voice and text interaction, agentic task execution, and extensible custom skills.
pyload — Free, open-source, pure-Python download manager with a web-based UI for automating downloads from one-click hosters and file-sharing sites.
joinbetula — Betula is a free, open-source, self-hosted bookmark manager with optional Fediverse sharing, run as a single binary and SQLite file.
netron — Netron is a free, open-source viewer for neural network, deep learning, and machine learning models, letting engineers inspect model architecture graphs, layers, and tensor shapes in the browser or desktop.
GitHub — A web-based Git platform for version control, code review, and collaborative software development, with built-in CI/CD via GitHub Actions.
Jira — Atlassian's project and issue tracking software for agile software teams, with Scrum and Kanban boards.
DocuSign — A publicly traded e-signature and agreement management platform that lets businesses prepare, sign, and manage contracts and other documents electronically.
Vercel — Vercel is a frontend cloud platform for building, deploying, and scaling web applications, created by the team behind Next.js and the AI app-builder v0.
Twilio — Twilio is a cloud communications platform that lets developers embed voice calls, SMS, WhatsApp messaging, video, and email into applications through simple APIs.
Webflow — Webflow is a visual, no-code website builder and CMS that gives designers full control over responsive HTML and CSS, with built-in hosting, a content management system, and ecommerce tools.
QuickBooks — Intuit's QuickBooks accounting software brand, spanning the QuickBooks Desktop product line (Pro Plus, Premier Plus, and Enterprise) used by small and midsize businesses for bookkeeping, invoicing, payroll, and financial reporting.
PandaDoc — PandaDoc is a document automation platform for creating, sending, tracking and electronically signing proposals, quotes and contracts, with built-in CRM and payment integrations.
Xero — Xero is a cloud-based accounting software platform for small and mid-sized businesses, offering invoicing, bank reconciliation, and reporting alongside a large third-party app marketplace.
Adobe Photoshop — Adobe Photoshop is the industry-standard raster image editing app for photo retouching, compositing, and digital art, offered via Creative Cloud subscription.
Adobe Acrobat — Adobe Acrobat is a PDF platform for viewing, editing, converting, e-signing, and organizing PDF files, available as a free Reader and paid Standard/Pro subscriptions.
Wix — Wix is a cloud-based website builder and business platform that lets anyone design, host and manage websites, online stores and web apps using drag-and-drop tools or AI-assisted setup.
FreshBooks — FreshBooks is a cloud accounting and invoicing platform built for self-employed professionals, freelancers, and small service businesses, combining invoicing, expense tracking, time tracking, and financial reporting in one product.
Amplitude — Amplitude is a digital analytics platform for tracking user behavior, running experiments, and using AI-driven insights to improve product experiences.
Mixpanel — Mixpanel is a product analytics platform that tracks user events, funnels, and retention to help product and growth teams understand behavior in web and mobile apps.
Segment — Segment (Twilio Segment) is a customer data platform that collects, unifies, and routes first-party customer data from websites, apps, and backend systems to hundreds of downstream marketing, analytics, and data warehouse destinations.
Sentry — Application monitoring platform that gives developers real-time error tracking, distributed tracing, and session replay to find and fix production issues faster.
LaunchDarkly — LaunchDarkly is a feature management and experimentation platform that lets engineering teams control feature flags, rollouts and AI agent behavior at runtime.
AWS — AWS (Amazon Web Services) is Amazon's cloud computing platform, offering compute, storage, database, networking, and AI/ML services on a pay-as-you-go basis.
Google Cloud — Google Cloud Platform is Google's suite of pay-as-you-go cloud computing services spanning compute, storage, data analytics, and AI/ML, competing with AWS and Microsoft Azure.
Microsoft Azure — Microsoft Azure is Microsoft's cloud computing platform offering over 200 services across compute, storage, databases, networking, and AI on a consumption-based pricing model.
Cloudflare — Cloudflare is a global network platform providing CDN, DNS, DDoS protection, WAF, and edge computing (Workers), used to secure and accelerate millions of websites.
Visual Studio Code — Visual Studio Code is Microsoft's free, open-source source code editor with built-in debugging, Git integration, and a vast extension marketplace.
JetBrains IntelliJ IDEA — Full-featured IDE for Java and Kotlin development by JetBrains, offering intelligent code completion, refactoring, debugging, and framework support.
Postman — Postman is an API platform for building, testing, documenting, and collaborating on APIs, used by developers to design, mock, test, monitor, and publish REST, GraphQL, and other APIs.
Netlify — Netlify is a cloud platform for building, deploying, and hosting modern web applications, known for its git-based continuous deployment workflow for JAMstack and framework-driven sites.
DigitalOcean — DigitalOcean is a publicly traded cloud infrastructure provider offering simplified virtual servers, managed Kubernetes, databases, and app hosting for developers and startups.
Heroku — Cloud platform-as-a-service, owned by Salesforce, for deploying, running and scaling web applications without managing servers.
Neon — Neon is a serverless Postgres database platform that separates storage and compute, enabling instant database branching, autoscaling, and scale-to-zero, and was acquired by Databricks in 2025.
PlanetScale — PlanetScale is a cloud database platform offering managed, horizontally scalable MySQL (via Vitess) and PostgreSQL databases with Git-style branching, built by the original creators of Vitess.
MongoDB Atlas — MongoDB Atlas is MongoDB Inc.'s fully managed cloud database service that runs the MongoDB document database across AWS, Azure, and Google Cloud.
Firebase — Firebase is Google's mobile and web application development platform, offering a suite of backend-as-a-service tools including a NoSQL realtime database, authentication, cloud functions, hosting, and analytics.
Supabase — Supabase is an open-source Firebase alternative that gives developers a hosted Postgres database, authentication, instant APIs, edge functions, realtime subscriptions, and file storage in one platform.
Railway — Railway is a cloud infrastructure platform that lets developers deploy apps, databases, and background services directly from Git with usage-based billing.
Render — Render is a cloud application hosting platform, often described as 'the cloud for builders,' that lets developers deploy web services, static sites, managed databases, and background workers without managing their own servers.
LogRocket — Frontend monitoring platform combining session replay, error tracking, and AI-driven product analytics for web and mobile apps.
Bugsnag — Bugsnag, now part of SmartBear as Insight Hub, is an application stability monitoring platform that detects, prioritizes, and helps fix errors across web, mobile, and backend apps.
Rollbar — Rollbar is a cloud-based error monitoring and observability platform that helps development teams detect, triage, and resolve application errors in real time.
Honeybadger — Honeybadger is a bootstrapped error tracking, uptime and check-in monitoring platform built for Ruby, Elixir, PHP, Python and more.
Raygun — Application performance monitoring, crash reporting, and real user monitoring platform for web and mobile apps
AppSignal — AppSignal is a unified application performance monitoring platform combining error tracking, performance monitoring, logs, uptime, and host metrics for developers.
Scout APM — Scout APM, now branded Scout Monitoring, is an application performance monitoring tool that tracks errors, logs, and traces for Ruby, Python, PHP, Node.js, and Elixir applications.
OpenReplay — OpenReplay is an open-source, self-hostable session replay and product analytics platform that lets developers record and replay user sessions, debug errors, and analyze product usage without sending data to a third party.
FullStory — FullStory is a digital experience intelligence platform that captures every user session on a website or app, offering session replay, heatmaps, and AI-powered analytics to help product and engineering teams find and fix experience issues.
Mouseflow — Mouseflow is a website behavior analytics platform that combines session replay, heatmaps, funnels, and form analytics to help teams find and fix friction in the user experience.
Svix — Svix is a webhooks-as-a-service platform that lets companies send reliable, secure webhooks to their customers without building and maintaining webhook infrastructure in-house.
Hookdeck — Hookdeck is an event gateway that receives, queues, transforms and reliably delivers webhooks and asynchronous events for developers.
Trigger.dev — Trigger.dev is an open-source TypeScript platform for building and running long-running background jobs, AI agent workflows, and durable tasks with built-in retries, queues, and observability.
Encore — Encore is an open-source backend framework and cloud platform for TypeScript and Go that lets developers declare infrastructure as code and automatically provisions it in their own AWS or GCP account.
Doppler — Doppler is a developer-first secrets management platform that centralizes, syncs, and rotates API keys, environment variables, and credentials across applications and environments.
Infisical — Open-source secrets management platform for storing, syncing, and rotating API keys, credentials, and certificates across teams and infrastructure.
Inngest — Durable execution platform for developers to build reliable, event-driven workflows and background jobs that automatically retry and resume on failure.
Webhook.site — Webhook.site is a free developer tool that instantly generates a unique URL and email address so you can inspect, log, and debug incoming HTTP requests, webhooks, and emails in real time.
Beeceptor — Beeceptor is a cloud-based mock API platform for creating REST, GraphQL, SOAP, and gRPC test servers without writing backend code.
Mockoon — Mockoon is a free, open-source desktop application, CLI, and optional Cloud service for designing and running mock REST APIs locally without deployment or an account.
MockServer — MockServer is a free, open-source Java-based tool that mocks and proxies HTTP, HTTPS, gRPC, WebSocket and TCP traffic so teams can test against realistic, controllable service behavior instead of fragile live dependencies.
WireMock — Open-source API mocking and simulation tool for testing HTTP-based services, with an optional paid WireMock Cloud platform for team collaboration.
Bruno — Bruno is an open-source, git-native API client for REST, GraphQL, gRPC, and WebSockets that stores collections as local plain-text files.
Insomnia — Insomnia is an open-source, cross-platform API client for designing, testing, and debugging REST, GraphQL, WebSocket, SSE, and gRPC APIs.
HTTPie — HTTPie is a user-friendly HTTP client and API testing tool available as an open-source CLI and a desktop and web app.
Yaak — Local-first desktop API client for testing REST, GraphQL, gRPC, WebSocket, and SSE requests, built as a privacy-focused alternative to Postman and Insomnia.
Scalar — Scalar is an API platform that renders interactive, OpenAPI-based API reference documentation and pairs it with an open-source REST API client, an API registry, and SDK generation tools for developer portals.
Stoplight — Stoplight is an API design, documentation, and mocking platform that helps teams build APIs using a design-first workflow, now operating as part of SmartBear.
ReadMe — An interactive API documentation platform that turns static developer docs into live, testable API reference hubs used by thousands of API-first companies.
Mintlify — Mintlify is a modern documentation platform that helps developer teams build, host, and maintain API references and product docs, used by companies like Anthropic and Cursor.
Fern — Fern is a developer platform that generates type-safe SDKs and API documentation websites directly from an OpenAPI, AsyncAPI, or Protobuf specification.
Speakeasy — Speakeasy is a developer platform that automatically generates type-safe SDKs, Terraform providers, and other client libraries from an API OpenAPI specification.
Bump.sh — Bump.sh turns OpenAPI, AsyncAPI, and Arazzo specification files into always up-to-date, interactive API reference documentation and changelogs.
Redocly — Redocly is an API documentation and developer portal platform built around the popular open-source Redoc renderer, helping teams publish, govern, and manage OpenAPI docs.
Docusaurus — An open-source static site generator built by Meta for creating fast, versioned documentation and content sites using Markdown, MDX, and React.
MkDocs — MkDocs is a free, open-source static site generator written in Python that turns Markdown files into fast, searchable documentation websites configured with a single YAML file.
VitePress — VitePress is a free, open-source static site generator built on Vite and Vue for turning Markdown into fast documentation websites.
Nextra — Nextra is an open-source static site generation framework built on top of Next.js that makes it easy to build fast, Markdown and MDX-powered documentation and content sites.
Starlight — Starlight is a free, open-source documentation site framework built on Astro, offering navigation, search, internationalization, and accessibility out of the box.
Sphinx — Sphinx is a free, open-source documentation generator originally built for the Python project that turns reStructuredText or Markdown source files into HTML, PDF, and other output formats.
Material for MkDocs — Material for MkDocs is a widely used open-source documentation theme and framework built on MkDocs that turns Markdown into fast, searchable, professionally designed documentation sites.
Storybook — Storybook is a free, open-source frontend workshop for building, testing, and documenting UI components in isolation, maintained by the team behind Chromatic.
Chromatic — Cloud-based visual testing and UI review platform from the makers of Storybook, used to catch visual regressions in React, Vue, and Angular component libraries.
Percy — Percy is a visual review and visual regression testing platform, now owned by BrowserStack, that captures and compares UI screenshots across browsers to catch unintended visual changes in code.
Applitools — Applitools is an AI-powered testing platform for visual, functional, and cross-browser test automation, used by enterprise QA and engineering teams.
BrowserStack — BrowserStack is a cloud platform for testing web and mobile apps across thousands of real browsers, devices, and OS combinations.
Sauce Labs — Sauce Labs is a cloud-based continuous testing platform that lets development and QA teams run automated and manual tests for web and mobile apps across real and virtual browsers and devices.
TestingBot — TestingBot is a cloud-based cross-browser and mobile app testing platform that runs automated Selenium, Playwright, Cypress, and Appium tests, plus manual live testing, across thousands of real browsers and devices.
SonarQube — SonarQube is a self-managed static code analysis platform by SonarSource that continuously checks code quality, bugs, vulnerabilities, and code smells across 30-plus languages.
Flagsmith — Flagsmith is an open-source feature flagging, remote configuration, and A/B testing platform that lets engineering teams control feature rollouts across web, mobile, and server-side applications without redeploying code.
Unleash — Unleash is an open-source feature flag and feature management platform that lets engineering teams decouple deployments from releases through gradual rollouts, kill switches, and A/B testing.
Flipt — Flipt is a git-native, self-hosted feature flag and feature management platform that stores flags as code in your own Git repositories so every change is a reviewable, auditable commit.
FeatBit — FeatBit is an open-source, self-hostable feature flag and experimentation platform built with .NET that lets engineering teams decouple code deployment from feature release, target users, run A/B tests, and roll back instantly without redeploying.
ConfigCat — ConfigCat is a feature flag and remote configuration platform with flat-tier pricing, unlimited seats and users, and open-source SDKs for 10+ platforms.
DevCycle — DevCycle is an OpenFeature-native feature flag management platform for developers to control feature rollouts, targeting, and experimentation.
Parse Platform — Parse Platform is a free, open-source backend-as-a-service framework, originally built by Facebook's Parse before being open-sourced in 2016, letting developers self-host data storage, auth, push notifications and cloud functions.
Novu — Novu is an open-source notification infrastructure platform that lets developers trigger multi-channel notifications (email, SMS, push, chat and in-app) from a single API call and manage them with a visual workflow editor.
Knock — Knock is a notification infrastructure platform that gives engineering teams APIs and a workflow builder to send email, SMS, push, chat, and in-app notifications.
Courier — Courier is a notification infrastructure platform that lets developers send email, SMS, push, chat, and in-app notifications through a single API and visual designer.
SuprSend — SuprSend is a notification infrastructure platform that lets developers and product teams design, send, and manage multi-channel notifications through a single API.
MagicBell — MagicBell is a notification infrastructure API and SDK that lets product teams add a unified notification inbox and multi-channel alerts, including email, mobile push, web push, Slack, and SMS, to their applications.
Engagespot — Engagespot is a developer-focused notification infrastructure platform providing a unified API to send multi-channel notifications, including in-app, email, push, SMS, and WhatsApp, from a single integration.
Gotify — Gotify is a free, open-source, self-hosted server for sending and receiving push notifications in real time via a simple REST API and WebSocket.
ntfy — ntfy is a simple, open-source HTTP-based pub-sub push notification service that lets developers and self-hosters send notifications to phones, desktops and scripts using basic PUT or POST requests.
Postal — Postal is a free, open-source, self-hosted mail delivery platform that lets developers run their own SMTP server for sending and receiving transactional and marketing email, as an alternative to hosted services like Postmark or Mailgun.
Mailcow — Mailcow is a free, open-source, Docker-based mail server and groupware suite that bundles Postfix, Dovecot, SOGo, Rspamd, and other components behind a modern web admin UI.
Mailu — Mailu is a free, open-source mail server distribution packaged as Docker images, bundling Postfix, Dovecot, Rspamd, and Roundcube for self-hosted email.
Modoboa — Modoboa is an open-source mail hosting and administration platform that bundles Postfix and Dovecot with a modern web admin panel and webmail client.
Stalwart Mail Server — Stalwart is an open-source, all-in-one mail and collaboration server written in Rust that combines JMAP, IMAP4, POP3, SMTP, CalDAV, CardDAV, and WebDAV in a single self-hosted platform.
Maddy Mail Server — Maddy Mail Server is a free, open-source, all-in-one mail server written in Go that replaces Postfix, Dovecot, and related daemons with a single composable binary.
Mail-in-a-Box — Mail-in-a-Box is a free, open-source script that turns a fresh Ubuntu cloud server into a full self-hosted mail server with webmail, contacts, and calendar in a few hours.
Mailpit — Mailpit is a free, open-source SMTP testing server and web-based email viewer that developers self-host to capture, inspect, and debug outgoing emails during development.
Hugo — Free, open-source static site generator written in Go, known for very fast build times and flexible templating.
Jekyll — Open-source, Ruby-based static site generator that transforms plain text and templates into fast, database-free websites, and powers GitHub Pages.
Eleventy — Eleventy (11ty) is a free, open-source JavaScript static site generator designed to be simpler and more flexible than alternatives like Jekyll, supporting many template languages out of the box.
Nuxt — Nuxt is a free, open-source full-stack web framework built on Vue.js that adds file-based routing, server-side rendering, static site generation, and an auto-import developer experience on top of Vue and Vite.
SvelteKit — SvelteKit is a free, open-source web application framework built on top of Svelte that adds file-based routing, server-side rendering, and full-stack app infrastructure.
Remix — Remix was a full-stack React web framework created by the makers of React Router; its data-loading and routing ideas have since been merged into React Router, while a new standalone framework called Remix 3 is being built separately from React.
Qwik — Open-source JavaScript framework focused on resumability, letting web apps become instantly interactive without the hydration overhead of traditional frameworks.
Backstage — Backstage is an open-source developer portal framework created by Spotify and now hosted by the CNCF, unifying a software catalog, docs, and templates for platform engineering.
Port — Port is an internal developer portal and platform engineering tool that lets organizations build a software catalog, automate infrastructure actions, and enforce governance through scorecards and self-service workflows.
Cortex — Cortex is a San Francisco-based internal developer portal that centralizes service ownership, catalogs, and scorecards for engineering teams running microservices.
OpsLevel — OpsLevel is an internal developer portal (IDP) that gives engineering teams a unified software catalog, automated standards and scorecards, and self-service actions to improve engineering maturity.
Roadie — Roadie is a hosted, managed internal developer portal built on the open-source Backstage framework, giving engineering teams a software catalog without self-hosting Backstage.
Compass — Compass, Inc. (NYSE: COMP) is a publicly traded, technology-enabled residential real estate brokerage headquartered in New York City. Founded in 2012, it combines a proprietary software platform, including CRM, marketing, and AI tools, with a nationwide network of real estate agents, and completed an all-stock combination with Anywhere Real Estate in January 2026.
1984.is — Free DNS hosting and management service from Icelandic hosting provider 1984, offering unlimited DNS zones, dynamic DNS, and DNSSEC support at no cost.
3scale — API management platform for securing, publishing, and monetizing APIs across hybrid cloud, now developed and sold by Red Hat as Red Hat 3scale API Management.
4EVERLAND — A Web3 cloud computing platform that combines decentralized hosting, IPFS and Arweave storage, a multi-network gateway, RPC node access, and an AI model marketplace for building and running decentralized applications.
AlphaAI — AlphaAI (alphai.io) is a financial news API built for AI agents and trading bots, delivering relevance-scored, ticker-linked news with sentiment analysis via REST API and MCP server for AI tools like Claude and Cursor.
apiary.io — Apiary was an API design, mock server, and documentation platform built around the open-source API Blueprint format. It was acquired by Oracle in 2017 and is now being wound down, with Oracle shutting the service off in September 2026.
APIVerve — APIVerve is a single subscription that unlocks 300 plus utility, data, and AI-powered REST APIs, such as email validation, geocoding, and text analysis, through one API key and a shared credit-based billing pool.
back4app.com — Back4App is a backend-as-a-service (BaaS) platform built on the open-source Parse Platform, giving developers a hosted database, REST and GraphQL APIs, cloud functions, and authentication without managing server infrastructure.
Bastet — Bastet is a free, open-source, ncurses-based falling-block puzzle game for Linux and Unix terminals that deliberately gives players the worst possible piece instead of a random one, making it intentionally harder than standard Tetris-style games.
Bibisco — bibisco is novel-writing software that helps fiction authors organize characters, plot, chapters, scenes, and locations in a single desktop writing workspace.
Bluefish — Bluefish is a free, open-source, cross-platform text editor built for web and script development, supporting HTML and more than 30 programming and markup languages.
Bomi Player — Bomi, formerly known as CMPlayer, is a free and open-source graphical media player built on the mpv playback engine, historically available for Linux and, in earlier versions, macOS.
bup — bup is a free, open-source backup program that stores data using git's packfile format, giving it fast incremental backups and global block-level deduplication across and within files. Created by developer Avery Pennarun (also known for sshuttle, git-subtree, and Tailscale) and first released around 2010, bup was built to solve a problem plain git could not: efficiently version-controlling very large files such as virtual machine disk images and multi-gigabyte databases. Instead of git's diff-based storage, bup splits files into content-defined chunks using a rolling checksum (similar to rsync), then writes those chunks directly into packfiles without a separate garbage-collection or repacking step, so it stays fast even as backup sets grow into hundreds of gigabytes or more. Because the underlying format is git-compatible, backed-up data can, in principle, be inspected with ordinary git tooling even without bup itself. bup supports local and remote backups over SSH, FUSE-based mounting of backup snapshots, indexing of millions of filenames, and optional par2 redundancy for bit-rot protection, making it a favorite among sysadmins, self-hosters, and command-line-oriented Linux and BSD users who want a scriptable, dependency-light alternative to commercial backup suites.
Calendarific — Calendarific is a developer-focused API that provides structured public holiday and calendar data covering more than 230 countries, including national holidays, regional and local observances, and religious holidays, updated on a regular schedule. Developers integrate Calendarific into applications such as booking platforms, HR and payroll systems, e-commerce checkout flows, and scheduling tools that need to know when a given country or region observes a holiday, rather than hand-maintaining static holiday lists that quickly go stale. The API returns holiday data as structured JSON, with support for filtering by country, year, and holiday type, and premium plans add features like configurable alerts, CSV/XLS export, and multiple API keys for separating environments. Calendarific offers a genuinely usable free tier capped at 500 API calls per month, with paid Starter, Business, and Enterprise plans scaling up to tens of millions of calls per month for higher-traffic applications; subscription billing is processed through Stripe. Because holiday rules change from year to year and vary enormously by country, religion, and local jurisdiction, an API like Calendarific saves development teams from the ongoing maintenance burden of tracking those changes themselves.
Canopy — Canopy (getcanopy.com) is a cloud-based practice management platform built for accounting, tax, and bookkeeping firms, consolidating client management, workflow automation, document handling, billing, and tax resolution tools into one system. Founded in 2014 by former Wall Street tax attorney Kurt Avarell as Beanstalk before rebranding to Canopy in 2015, it has raised over 290 million dollars in venture funding. Note: a separate, unrelated company called Canopy Connect (usecanopy.com) provides an insurance and banking data API and is not the subject of this profile.
CarAPI.dev — CarAPI is a developer-focused vehicle data API, operated by CarAPI LLC, that provides programmatic access to makes, models, trims, body styles, engines, colors, mileage data, VIN decoding, license plate decoding, and OBD-II diagnostic codes covering vehicles roughly from 1990 to the current model year. It is a paid, subscription-based REST API with no permanently free production tier, aimed at developers building automotive, insurance, dealership, and fleet applications.
Celluloid — Celluloid is a free, open-source GTK media player that serves as a lightweight, configurable front end for the mpv playback engine, formerly known as GNOME MPV before its 2019 rename.
Cinelerra-cv — Cinelerra-CV, short for Cinelerra Community Version, is a free and open-source non-linear video editor and compositor for Linux. It was forked in 2003 from Heroine Virtual's original Cinelerra codebase by community developers who wanted a version built with standard shared system libraries rather than bundled dependencies.
Cinnamon — Cinnamon is a free and open-source desktop environment for Linux, developed by the Linux Mint team after GNOME 3's 2011 release replaced the traditional GNOME 2 desktop metaphor with GNOME Shell. Originally forked from GNOME Shell components in January 2012 as Project Cinnamon, it became a fully independent desktop environment with the release of Cinnamon 2.0 in October 2013.
Clapper — Clapper is a free, open-source media player for the GNOME desktop, built with GTK4 and powered by the GStreamer multimedia framework. Created primarily by developer Rafal Dziegiel, known online as Rafostar, it offers a minimalist, modern interface with windowed, floating, and fullscreen viewing modes.
Cloudmersive — Cloudmersive is a developer-focused API platform offering more than 1,000 functions across security, document conversion, image processing, and data validation, all accessible through a single API key. Founded in 2017 and based in Pleasanton, California, it serves more than 1,100 businesses with capabilities such as virus scanning, PII redaction, file format conversion, OCR, and barcode generation. The service is offered on a freemium basis with a free tier and several paid tiers scaled by organization size.
Commerce Layer — Commerce Layer is a headless, API-first commerce platform that provides the backend infrastructure for carts, checkout, pricing, promotions, inventory and order management, without shipping a storefront or theme layer. Founded in 2017 by Filippo Conforti and Massimo Scardellato with roots in Prato, Italy, it is built for developers assembling composable commerce stacks across websites, mobile apps, POS systems and emerging AI-agent-driven shopping channels.
Compare JSON — Compare JSON refers to the category of free, browser-based utilities used to diff two JSON documents and highlight added, removed, or changed keys and values. These tools (such as jsondiff.com, jsoncompare.org, and json-diff.com) typically run entirely in the browser, require no signup, and are aimed at developers who need a quick way to spot differences between JSON payloads, config files, or API responses.
Cosmic — Cosmic is an AI-powered headless content management system built for developers and content teams that want a flexible content API paired with built-in AI agents. Founded by Carson Gibbons and Tony Spiro and backed by Y Combinator (W19), Cosmic provides a REST API, TypeScript SDK, CLI, and an MCP server for integrating with AI coding tools like Cursor, Claude Code, and GitHub Copilot.
Country-State-City Microservice API — Country-State-City Microservice API refers to open-source and free-tier REST and GraphQL APIs that provide hierarchical geographic data, countries, their states or provinces, and their cities, for use in address forms, location pickers, and geographic autocomplete features. The category includes hosted services such as countrystatecity.in and open-source datasets and packages such as the widely used countries-states-cities-database project.
credit mapping — credit mapping is a generic, descriptive term rather than the name of one specific branded software product; no single company or application publicly known as Credit Mapping was identified during research. In financial services, the term is generally used to describe the process of mapping and analyzing a borrower's credit data, financial statements, or debt structure, a category served by credit risk management and financial spreading software from vendors such as FIS, C and R Software, Hebbia, and Experian.
CurlHub — CurlHub is a lightweight, no-install web tool that gives developers a unique request bin URL for capturing and inspecting inbound HTTP and API traffic in real time. It was launched in 2018 by independent developer Christopher (known online as cdeutsch) as a replacement for the discontinued Traffic Inspector feature that Runscope had previously offered. It runs as a small, independently maintained project rather than a company, with a free tier and paid options for higher request volumes.
CurrencyScoop — CurrencyScoop was a REST API offering real-time and historical exchange rate data for 168 world currencies in JSON format. As of 2026, the currencyscoop.com domain redirects to CurrencyBeacon, indicating the product has been rebranded and consolidated under the CurrencyBeacon name, which now serves as the active successor product for the same underlying currency data service.
CustomJS — CustomJS is a cloud platform that lets developers and no-code builders run custom JavaScript and Node.js functions as serverless API endpoints, alongside tools for PDF generation, screenshots, form building, web scraping, and email webhooks. It is operated by TechnologyCircle GmbH, headquartered in Hamburg, Germany, and integrates directly with automation platforms like Make, n8n, Zapier, and Power Automate as well as raw API access.
Data Rescue — Data Rescue is a data recovery application for Mac and Windows made by Prosoft Engineering, used to recover deleted, formatted, or corrupted files from hard drives, SSDs, and removable media. It scans a drive, lets users preview recoverable files before paying, and then restores them to a separate destination. Prosoft Engineering has published the Data Rescue product line since 2002.
DataStax — DataStax is a data platform company built on Apache Cassandra, best known for Astra DB, a cloud-native NoSQL and vector database used to power real-time and AI applications, and for Langflow, an open-source tool for building AI applications with large language models. Founded in 2010 as Riptano by Jonathan Ellis and Matt Pfeil, the company was later renamed DataStax and headquartered in Santa Clara, California. IBM announced its acquisition of DataStax in February 2025 and completed the deal in May 2025, folding DataStax's technology into IBM's watsonx AI and data portfolio.
DeepAR — DeepAR is a developer SDK for adding real-time augmented reality face and body effects, virtual try-on, and beauty filters to apps and websites.
deployment.io — Deployment.io is an AI agent platform that writes, tests, and deploys code changes to your own cloud account, with human approval before production releases.
DocPenny — docpenny is a developer-focused PDF generation API that turns template IDs and data into PDFs asynchronously, priced with non-expiring credits instead of monthly subscriptions.
Doczilla — Doczilla is an API for generating PDFs and screenshots from HTML with Handlebars templating, webhook callbacks, and usage-based pricing built by Dutch software studio Palm Tree Coding.
Doppio — Doppio is an HTML-to-PDF and screenshot API using headless Chrome, offering synchronous and asynchronous rendering, S3 storage, and usage-based pricing for developers.
DynamicDocs — DynamicDocs is Advicement's REST API that converts JSON data into polished, LaTeX-based PDFs, built for invoices, factsheets, and financial reports with dynamic tables and charts.
Earnings Feed — Earnings Feed is a developer-focused REST API delivering real-time SEC filings, insider transactions, and institutional holdings data within about 60 seconds of SEC acceptance.
embed.ly — Embedly is a developer API that turns URLs into rich embeds — video, images, polls, and articles — supporting over 1,000 content providers for publishers and apps.
EMQX Serverless — EMQX Serverless is EMQ's pay-as-you-go, fully managed MQTT messaging service for IoT, letting teams connect devices without provisioning or managing broker infrastructure.
Epic Games — The Epic Games Store is a free PC and mobile game and software storefront from Epic Games, known for regular free game giveaways and a developer-friendly revenue share.
file.io — file.io is a file-sharing service that generates temporary, self-destructing download links, letting users send files without accounts while paid plans add storage and larger transfers.
Financial Data — Financial Data (financialdata.net) is a REST API delivering real-time and historical stock market data, company financials, insider trading and alternative datasets.
Fork — Fork is a paid, native Git client for Mac and Windows built by an indie developer duo, offering a visual interface for commits, merges, rebases, and diffs.
Foursquare — Location intelligence company providing global Places APIs, geotagging, and POI data covering 100M+ locations for mapping, ad tech, and app developers.
Geekflare API — Geekflare API is a developer platform offering web scraping, web search, screenshot, DNS lookup, and PDF-generation APIs that return structured data without requiring users to manage proxies or headless browsers.
geocod.io — Geocodio is a geocoding API and no-code spreadsheet tool that converts addresses to coordinates and appends contextual data like Census demographics and school districts across the US, Canada, Mexico, and the UK.
geocodify.com — Geocodify is a geocoding, geoparsing, and mapping API covering 200+ countries with a database of over 500 million addresses and points of interest.
Geolocated.io — Geolocated.io is an IP geolocation API, operated by Unibuffer Technologies, that turns an IP address into location, connection, currency, language, and time-zone data.
GitKraken — GitKraken is a developer experience platform offering a visual Git client, GitLens IDE extensions, a CLI, and AI-assisted workflow tools for individual developers and engineering teams.
GoFile.io — Gofile is a cloud file hosting and sharing service that lets anyone upload files and generate shareable download links without creating an account, with a paid Premium tier for more storage and speed.
GrowthX — GrowthX is a B2B growth program that pairs one-on-one expert sales coaching with GrowthX Go, an AI-powered platform for organizing go-to-market strategy, messaging, and pipeline work.
here — HERE Technologies is a location data and mapping platform providing APIs and SDKs for geocoding, routing, maps, and fleet and logistics optimization.
Hook0 — Hook0 is an open-source webhooks-as-a-service platform that lets developers send reliable, secure webhooks through a single API call, available as a free self-hosted project, a managed cloud service, or a dedicated on-premise deployment.
HS Ping — HS Ping is an API service for looking up Harmonized System (HS) and Harmonized Tariff Schedule (HTS) codes across dozens of countries.
HTTP Toolkit — HTTP Toolkit is an open-source app for intercepting, inspecting, and mocking HTTP and HTTPS traffic on Windows, Linux, and Mac.
imgen — Imgen is a free API by Jitbit Software that generates social preview (Open Graph / Twitter card) images on the fly from a title, background image, and logo passed as URL parameters.
IP Geolocation — IP Geolocation (ipgeolocation.io) is a developer API that returns location, ASN, security, and time zone data for any IPv4 or IPv6 address, used by companies including Amazon and SpaceX.
ip-api — ip-api.com is a free IP geolocation API that returns location, ISP, timezone, and proxy/hosting-detection data for IPv4 and IPv6 addresses, serving over a billion requests a day.
IP.City — IP.City is an IP geolocation API that returns city, country, ISP, and user-agent data for IPv4 and IPv6 addresses, with a free tier of 100 requests per day.
ip2geo.dev — ip2geo.dev is a developer API and SDK toolkit that converts IPv4 or IPv6 addresses into country, city, ISP, ASN, and timezone data, with a free tier of 1,000 conversions per month.
ipapi — ipapi is a REST API by Kloudend, Inc. that returns city, region, country, timezone, currency, and ASN data for any IP address, with plans from a free trial to enterprise volumes.
Backendless — Backendless is a visual backend-as-a-service and no-code app development platform offering a managed database, cloud code, real-time features, and a drag-and-drop UI Builder for building mobile and web applications.
Boomi — Boomi is a leading enterprise integration-platform-as-a-service (iPaaS) that connects applications, data, and APIs across cloud and on-premises systems, now owned by private equity firms Francisco Partners and TPG after being spun off from Dell Technologies in 2021.
Celigo — Celigo is an integration platform as a service (iPaaS) built around its integrator.io engine, offering prebuilt NetSuite integration apps, 200+ SaaS and ERP connectors, and low-code automation flows for connecting business systems.