Compare top team chat and messaging platforms. Find the best internal communication software by features and pricing.
46 tools
Tools in Team Chat
Mattermost — Mattermost is an open-source, self-hostable team messaging and collaboration platform positioned as a secure, customizable alternative to Slack for regulated and technical organizations.
Rocket.Chat — Rocket.Chat is an open-source team chat and collaboration platform that can be self-hosted or used via managed cloud plans, with a focus on security and data sovereignty.
Zulip — Open-source team chat app that organizes every conversation into topic-based threads, built for focused, asynchronous communication across distributed teams.
Element — Element is an open-source, end-to-end encrypted messaging and collaboration app built on the Matrix protocol, offering decentralized, self-hostable team chat as a secure alternative to Slack, Teams, and Discord.
Nextcloud Talk — Nextcloud Talk is the self-hosted audio, video, and chat communication module built into the Nextcloud open-source collaboration platform, offering encrypted calls, screen sharing, and webinars without third-party cloud dependency.
Synapse — Synapse is the original, open-source reference homeserver implementation for the Matrix decentralized communication protocol, developed by Element and used to run self-hosted or federated chat servers.
AnyCable — AnyCable is a real-time WebSocket server with delivery guarantees, presence tracking, and message ordering, integrating with Rails, Laravel, Node.js, and other backends.
Centrifugo — Centrifugo is an open-source, self-hosted real-time messaging server for WebSocket, SSE, and streaming APIs, used as an alternative to Pusher and PubNub.
Chitchatter — Chitchatter is a free, open-source, serverless peer-to-peer chat app offering encrypted messaging, file transfer, and video calls with nothing stored on a server.
Conduit — Conduit is a lightweight, open-source Matrix homeserver written in Rust, packaged as a single binary with an embedded database for easy self-hosting.
Continuwuity — Continuwuity is a free, open-source Rust Matrix homeserver forked from conduwuit for self-hosted, federated chat. See features and deployment options.
GlobaLeaks — GlobaLeaks is a free, open-source platform that lets NGOs, newsrooms, companies and public bodies run secure, anonymous whistleblowing and reporting channels over Tor and HTTPS.
GNUnet — GNUnet is a free, open-source framework for secure, decentralized peer-to-peer networking, offering censorship-resistant file sharing, messaging, VPN and a decentralized naming system.
Hyphanet — Open-source, decentralized peer-to-peer network for censorship-resistant, anonymous publishing and communication, formerly Freenet.
Jami — Free, open source, fully peer-to-peer encrypted messaging and calling app with no central server, backed by the FSF.
Live Helper Chat — Open-source live chat and customer support platform with voice, video, screen share and multi-channel bot support, self-hosted or cloud-hosted.
Mumble — Mumble is a free, open-source, low-latency voice chat application originally built for gamers that offers high quality encrypted real-time audio communication.
One Time Secret — One Time Secret (Onetime Secret) is an open-source tool for sharing passwords, API keys and other sensitive text via a link that self-destructs after being viewed once, running since 2011 with a free tier and a paid Identity Plus tier for custom domains and branding.
OTS — OTS (One Time Secrets, hosted at ots.fyi) is a free, open-source, self-hosted tool for sharing sensitive text or files as self-destructing links, encrypting secrets with AES-256 in the browser before they reach the server.
RetroShare — Free, open-source, decentralized platform for encrypted chat, file sharing, forums, and voice/video calls built directly between trusted friend-to-friend nodes.
SAMA — SAMA is a free, open-source, self-hostable chat server for mobile and web apps, built on uWebSockets.js with end-to-end encryption and clustering.
Screego — Free, open-source, self-hosted screen-sharing tool for developers, using WebRTC for low-latency, browser-based screen sharing with no client install.
Spectrum 2 — Spectrum 2 is a free, open-source instant-messaging transport and gateway that lets an XMPP server bridge conversations with other messaging networks. It is unrelated to the different Spectrum community-chat platform that GitHub acquired and later shut down.
Stoat — Stoat (formerly Revolt) is a free, open-source chat and community platform built as a privacy-first alternative to Discord, Slack, and Telegram.
Tiledesk — Tiledesk is an open-source platform for building AI chatbots and combining them with live chat, letting support teams automate conversations across web, WhatsApp, and other channels.
Tox — Tox is a free, open-source peer-to-peer messaging and video-calling protocol built for end-to-end encrypted communication without central servers, developed by a volunteer community since 2013.
Tuwunel — Tuwunel is a free, open-source Matrix homeserver written in Rust, built as the official successor to conduwuit for scalable, self-hosted, spec-compliant Matrix chat deployments.
Typebot — Typebot is a visual, open source chatbot and conversational form builder that can be self-hosted or used as a cloud service, letting teams design chat flows without code.
Ergo — Ergo is an open-source IRC server written in Go that combines an ircd, account services, and bouncer functionality into a single easy-to-configure binary with modern IRCv3 support, message history, and multi-client sync.
InspIRCd — InspIRCd is a free, open-source, modular IRCv3 server for UNIX-like and Windows systems, built from scratch in C++.
Kiwi IRC — Kiwi IRC is a free, open-source, browser-based IRC client that lets users join IRC networks instantly without installing any software.
ngircd — ngircd is a free, portable, lightweight open-source IRC server (daemon) written in C for running small to mid-sized private or public Internet Relay Chat networks.
Quassel IRC — Free, open-source, cross-platform IRC client built around a distributed core-and-client architecture, so your connection to IRC networks stays alive and your chat history persists even when your device is offline.
Robust IRC — RobustIRC is a free, open-source, fault-tolerant IRC network implementation that uses the Raft consensus algorithm to eliminate netsplits.
The Lounge — The Lounge is a free, open-source, self-hosted web IRC client that keeps you connected to IRC channels across devices with a modern, responsive interface.
UnrealIRCd — UnrealIRCd is a free, open-source Internet Relay Chat server for Linux, macOS, and Windows, known for its modular design, security tooling, and status as one of the most widely deployed IRC daemons.
Weechat — Free, open-source, extensible terminal-based IRC client built for speed, scripting, and lightweight remote use.
ZNC — Free, open-source IRC bouncer written in C++ that keeps a persistent connection to IRC networks, supporting multiple clients, playback buffers, and modules.
ejabberd — ejabberd is an open-source, Erlang-based XMPP, MQTT, and SIP server known for massive scalability, used to power large real-time messaging systems including early WhatsApp-style infrastructure and Nintendo Switch's chat network.
MongooseIM — MongooseIM is an open-source, Erlang-based XMPP messaging server built by Erlang Solutions for large-scale, fault-tolerant enterprise instant messaging deployments.
Openfire — Openfire is a free, open-source real-time collaboration server built on the XMPP protocol, used to run self-hosted instant messaging and group chat for organizations that want full control over their data.
Prosody IM — Prosody IM is a free, open-source XMPP (Jabber) instant messaging server designed for low resource usage, ease of configuration, and extensibility, used to self-host secure chat infrastructure.
Snikket — Free, open-source, self-hosted XMPP-based private messaging server for small communities, with an optional low-cost managed hosting service.
Tigase — Tigase is a high-performance, open-source XMPP/Jabber server written in Java for building real-time messaging, presence, and IoT communication systems, available under AGPLv3 or a commercial license.
Converse.js — Free, open-source XMPP/Jabber chat client written in JavaScript that runs entirely in the browser, embeddable as a widget or deployed as a full-page messaging app.
Salut à Toi — Salut à Toi, now known as Libervia, is a free, decentralized, multi-frontend communication platform built on the XMPP standard, supporting messaging, blogging, calls, and file sharing.