146 tools · 78 open-source · 68 SaaS
The best team chat tools. Ranked by real activity.
The top-ranked open-source team chat tool on Enlisted is Rocket.Chat (46k GitHub stars), followed by Mattermost and Telegram Desktop. Among SaaS products, other tools on Enlisted are most often compared with Slack, Microsoft Teams and Discord.
Enlisted lists 146 team chat tools: 78 open source and 68 SaaS. 73 of the open-source ones can be self-hosted on your own server or computer. The most common open-source licences here are AGPL-3.0 (19 tools), MIT (15) and Apache-2.0 (12). The open-source ones are most often listed as alternatives to Slack, Discord and WhatsApp.
Last updated October 3, 2026 · ranked by GitHub stars, growth and recent commits
The top 48 of 146 team chat tools
Rocket.Chat
Team Chat
The Secure CommsOS™ for mission-critical operations
OSSvs Slack★ 46k
Mattermost
Team Chat
Mattermost is an open source platform for secure collaboration across the entire software
OSSvs Slack★ 39k
Telegram Desktop
Team Chat
Telegram Desktop messaging app
GPL-3.0vs WhatsApp★ 33kTelegram for Android
Team Chat
Telegram for Android source
GPL-2.0vs WhatsApp★ 30k
Signal Android
Team Chat
A private messenger for Android.
AGPL-3.0vs WhatsApp★ 29k
Zulip
Team Chat
Zulip server and web application. Open-source team chat that helps teams stay productive a
Apache-2.0vs Slack★ 26k
SimpleX Chat
Team Chat
SimpleX - the first messaging network operating without user identifiers of any kind - 100
AGPL-3.0vs WhatsApp★ 20k
OpenIM
Backend as a Service
IM Chat OpenClaw
Apache-2.0vs Sendbird★ 17k
Signal Desktop
Team Chat
A private messenger for Windows, macOS, and Linux.
AGPL-3.0vs WhatsApp★ 17k
Element
Team Chat
A glossy Matrix collaboration client for the web.
AGPL-3.0vs Slack★ 14k
Signal iOS
Team Chat
A private messenger for iOS.
AGPL-3.0vs WhatsApp★ 12k
Signal Server
Team Chat
Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS
AGPL-3.0vs WhatsApp★ 11k
Mumble
Team Chat
Mumble is an open-source, low-latency, high quality voice chat software.
OSSvs Discord★ 8.3k
ejabberd
Team Chat
Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)
OSS★ 6.7k
The Lounge
Team Chat
💬 Modern, responsive, cross-platform, self-hosted web IRC client
MIT★ 6.3k
Campfire
Team Chat
Super simple group chat, without a subscription
MITvs Slack★ 4.7k
Ferdium
Productivity
All your services in one place, built by the community
Apache-2.0vs Beeper★ 4.6k
Synapse
Team Chat
Synapse: Matrix homeserver written in Python/Twisted + Rust
AGPL-3.0vs Slack★ 4.7k
Macro
Productivity
Macro is a unified workspace for teams: email, chat, docs, tasks, agents, calls, and CRM —
AGPL-3.0vs Slack★ 4.5k
Cinny
Team Chat
Yet another matrix client
AGPL-3.0vs Slack★ 3.9k
Element Android
Team Chat
A Matrix collaboration client for Android.
AGPL-3.0vs Slack★ 3.7k
Asterisk
Team Chat
The official Asterisk Project repository.
OSSvs RingCentral★ 3.6k
JuggleIM
Backend as a Service
IM Chat, High-performance, scalable, self-hosted instant messaging server in Go — private
Apache-2.0vs Sendbird★ 3.5k
Stoat
Team Chat
The software powering Stoat
OSSvs Discord★ 3.4k
WeeChat
Team Chat
The extensible chat client.
GPL-3.0★ 3.4k
Converse.js
Team Chat
Web-based XMPP/Jabber chat written in JavaScript
MPL-2.0★ 3.3k
FluffyChat
Team Chat
The cutest instant messenger in the [matrix]
AGPL-3.0vs WhatsApp★ 3.2k
Openfire
Team Chat
An XMPP server licensed under the Open Source Apache License.
Apache-2.0vs Slack★ 3.1k
Chatto
Team Chat
A fully-featured team and group chat application that you can easily selfhost.
AGPL-3.0vs Slack★ 2.8k
Wildfire Chat Android
Team Chat
即时通讯，聊天，野火IM Android客户端，支持Android 4.x —— 最新
OSSvs WeChat★ 2.7k
Wire
Team Chat
🇪🇺 Wire back-end services
AGPL-3.0vs Slack★ 2.8k
Quiet
Team Chat
A private, p2p alternative to Slack and Discord built on Tor & IPFS
GPL-3.0vs Slack★ 2.7k
Tuwunel
Team Chat
Official successor to conduwuit
Apache-2.0vs Slack★ 2.6kWebChat
Team Chat
💬 Chat with anyone on any website.
MIT★ 2.6k
Nheko
Team Chat
Desktop client for Matrix using Qt and C++20.
GPL-3.0vs Slack★ 2.5k
Rocket.Chat Mobile
Team Chat
The Secure CommsOS™ for mission-critical operations
MITvs Slack★ 2.4k
Chitchatter
Team Chat
Secure peer-to-peer chat that is serverless, decentralized, and ephemeral
GPL-2.0vs Whereby★ 2.3k
VoceChat
Team Chat
VoceChat Web App
GPL-3.0vs Slack★ 2.3k
Movim
Team Chat
Movim - Decentralized social platform
AGPL-3.0★ 2.1k
Mezon
Team Chat
Mezon is a new way to communicate with your team. It's faster, better organized, better fo
OSSvs Slack★ 2k
MongooseIM
Team Chat
MongooseIM is Erlang Solutions' robust, scalable and efficient XMPP server, aimed at large
OSS★ 1.8k
Rocket.Chat Desktop
Team Chat
The Secure CommsOS™ for mission-critical operations
MITvs Slack★ 1.7k
Delta Chat
Team Chat
Decentralized private messenger with chat-shared tools and games for Desktop
GPL-3.0vs WhatsApp★ 1.6kOpen OSCAR Server
Team Chat
Self-hostable instant messaging server compatible with classic AIM and ICQ clients written
MIT★ 1.6k
Sharkord
Team Chat
Lightweight, self-hosted, open-source chat server with voice, video, text, and screen shar
MITvs Discord★ 1.5k
hack.chat
Team Chat
a minimal, distraction-free chat application
OSS★ 1.4k
Errbot
Workflow Automation
Errbot is a chatbot, a daemon that connects to your favorite chat service and bring your t
GPL-3.0★ 3.3k
Wildfire IM
Team Chat
即时通讯，聊天，野火IM iOS客户端
OSSvs WeChat★ 1.2k
Team chat tools: questions
- What is the best open-source team chat tool?
- Rocket.Chat is the top-ranked open-source team chat tool on Enlisted, with 46k GitHub stars. It is followed by Mattermost, Telegram Desktop and Telegram for Android.
- What are the best free team chat tools?
- The top-ranked open-source team chat tools with a standard licence are Telegram Desktop (GPL-3.0), Telegram for Android (GPL-2.0) and Signal Android (AGPL-3.0), so their code is free to use. 32 of the 68 SaaS products here have a free plan, including Slack, WhatsApp and Webex.
- Which team chat tools can be self-hosted?
- 73 of the 78 open-source team chat tools on Enlisted can be self-hosted on your own server or computer; the top-ranked are Rocket.Chat, Mattermost and Zulip.
- How are these team chat tools ranked?
- Open-source tools are ordered by a score built from GitHub stars, star growth over the last 30 days and how recently the code changed; 56 of the 78 had new commits or a release in the last 30 days. SaaS products have no public repository, so they get a fixed baseline score. GitHub data is refreshed daily, and nobody can pay to move up.