EtherCalc is a free, open-source, self-hostable spreadsheet built for real-time collaborative editing, shared simply by sending a URL. Notion is a much…
Best for EtherCalc: EtherCalc fits technical users who want a free, self-hostable, real-time collaborative spreadsheet with a REST API and XLSX import/export, deployable via Docker Compose or Cloudflare Workers.
Best for Notion: Notion fits teams that want spreadsheet-like database views (table, board, calendar, timeline) embedded inside a broader connected workspace with AI-assisted writing and Q&A, from a Free plan up to $20 per member/month for Business.
At a Glance
EtherCalc
Notion
Primary category
Productivity
Productivity
Rating
Not documented
Not documented
Pricing model
Open Source
Freemium
Starting price
Free
Free; Plus from $10/user/month billed annually
Free plan
Yes
Yes
Free trial
Not documented
Not documented
Platforms
Web
Not documented
Team collaboration
Not documented
Yes
AI features
Not documented
Yes
Public API
Yes
Not documented
Key Differences
Core Purpose
EtherCalc: EtherCalc is a dedicated spreadsheet application focused solely on real-time collaborative editing of tabular, formula-based data.
Notion: Notion is a general workspace combining block-based pages, flexible databases, docs, and project management, with spreadsheet-like table views as one feature among many.
A single-purpose spreadsheet is simpler and faster to spin up for pure number-crunching, while a general workspace suits teams organizing many types of content together.
Pricing
EtherCalc: EtherCalc is free and open source with no pricing plans documented.
Notion: Notion is freemium: Free, then Plus at $10 per member/month, Business at $20 per member/month, and custom Enterprise pricing.
A zero-cost tool removes budget considerations entirely, while per-seat SaaS pricing scales with team size.
Collaboration Model
EtherCalc: EtherCalc's collaboration model is simple: share the spreadsheet's URL, and anyone with the link can edit it together in real time.
Notion: Notion's collaboration is workspace-based, with member roles, permissions, and admin controls scaling up through Business and Enterprise tiers.
URL-based sharing is fast and frictionless for ad hoc collaboration, while workspace-based permissions suit organizations needing access control.
Deployment
EtherCalc: EtherCalc can be self-hosted via Docker Compose without requiring Redis or other external services, or deployed to Cloudflare Workers as an alternative.
Notion: Notion is a fully hosted SaaS workspace with no self-hosting option documented.
Self-hosting gives full control over where spreadsheet data lives, which matters for teams with data-residency or privacy requirements.
AI Features
EtherCalc: EtherCalc does not document any AI features.
Notion: Notion includes AI-assisted writing, Q&A over a team's own Notion content, and configurable AI Custom Agents.
AI-assisted content creation and search are relevant to broader knowledge work, not to a tool focused purely on spreadsheet calculations.
Starting price reflects the lowest paid tier, not the full cost for every team size or usage level.
EtherCalc
Open Source — Free N/A
Notion
Free — $0 Free
Plus — $10/user/month (annual) or $12/user/month (monthly) Monthly or annual billing
Business — ~$20/user/month (annual) Monthly or annual billing
Enterprise — Custom Custom contract
Pros & Cons
EtherCalc
Pros
Completely free and open source, with no account, subscription, or paid tier required to use it
Genuine real-time collaborative editing with no manual save step, similar in spirit to Etherpad but for spreadsheets
Fully self-hostable, giving organizations complete control over where spreadsheet data is stored
Documented REST and JSON API makes it easy to integrate with other tools and scripts
Lightweight compared to full office suites, so it starts and loads quickly even on modest hardware
Cons
Formula library, charting, and formatting options are far more limited than Google Sheets or Excel Online
Default configuration grants anyone with a room URL edit access, so public deployments need extra care around authentication
No built-in enterprise access controls, audit logs, or granular permissions out of the box
The project is maintained largely as a personal open-source effort rather than by a dedicated commercial team, so support relies on community and documentation rather than a vendor help desk
Users self-hosting must handle their own infrastructure, backups, and migration between the legacy Redis-backed version and the newer Cloudflare Workers-based rewrite
Notion
Pros
Extremely flexible block-and-database model adapts to many different workflows
Can replace several single-purpose tools (wiki, docs, task tracker) in one workspace
Large ecosystem of templates and community resources
Increasingly capable AI features for summarization, search, and multi-step tasks
Generous free tier for individuals and students
Cons
Full Notion AI functionality is now limited to Business and Enterprise plans
Flexibility means more setup and configuration effort than opinionated tools
Performance can slow down in very large, deeply nested workspaces
Free plan caps file uploads and page history, limiting solo use over time
Enterprise pricing requires a custom sales conversation rather than transparent list pricing
Use Cases
Choose EtherCalc: EtherCalc fits technical users who want a free, self-hostable, real-time collaborative spreadsheet with a REST API and XLSX import/export, deployable via Docker Compose or Cloudflare Workers.
Choose Notion: Notion fits teams that want spreadsheet-like database views (table, board, calendar, timeline) embedded inside a broader connected workspace with AI-assisted writing and Q&A, from a Free plan up to $20 per member/month for Business.
Need both: A technical team could run quick, disposable collaborative calculations in a self-hosted EtherCalc instance (sharing just a URL) while keeping their structured, long-lived project data and documentation in Notion's databases and pages.
EtherCalc
Quick, no-signup collaborative data entry — Teams share a single EtherCalc room URL to jointly fill in a data set, plan an event, or track a shared list in real time without anyone needing to create an account.
Embedding a live spreadsheet in another application — Developers use EtherCalc's REST and JSON API, or the Drupal sheetnode plugin, to embed an editable, real-time spreadsheet directly inside another website, dashboard, or content management system.
Self-hosted, privacy-respecting spreadsheet infrastructure — Organizations that prefer not to store data with Google or Microsoft self-host EtherCalc via Docker or Cloudflare Workers, giving them full control over where spreadsheet data lives, similar to how Framasoft operates its own Framacalc instance.
Notion
Team knowledge base and wiki — Companies build a searchable internal wiki for documentation, onboarding, and process guides accessible to the whole team.
Lightweight project management — Teams track tasks and projects using Notion's board and timeline database views instead of a dedicated project management tool.
Personal notes and planning — Individuals use the free plan to organize personal notes, reading lists, and daily planning in one flexible workspace.
Frequently Asked Questions
Is EtherCalc a replacement for Notion's databases?
Not exactly. EtherCalc is a dedicated, formula-capable spreadsheet, while Notion's database views are structured records that can be displayed as a table, board, calendar, or timeline within a broader workspace — they're not documented as a formula-driven spreadsheet.
Which tool is free?
EtherCalc is completely free and open source with no pricing plans. Notion has a Free plan but paid tiers start at $10 per member/month for Plus.
Can I self-host EtherCalc or Notion?
EtherCalc can be self-hosted via Docker Compose or deployed to Cloudflare Workers. Notion does not document a self-hosting option — it's SaaS only.
How do I collaborate on an EtherCalc spreadsheet?
You share the spreadsheet's URL with others, and they can edit it together in real time — no accounts or permissions system is documented beyond that.
Does EtherCalc have AI features?
No AI features are documented for EtherCalc. Notion includes AI-assisted writing, Q&A over your workspace content, and configurable AI Custom Agents.
Can EtherCalc and Notion be used together?
Yes — a team could use a self-hosted EtherCalc instance for quick, shareable calculations while keeping structured, long-term project data and documentation organized in Notion.