> /v1/alternatives/pumble
Open source alternatives to Pumble[007]
Pumble is a team chat app with channels, direct messages, threads, file sharing and voice and video calls. Below are 7 self-hostable open source alternatives, ranked by GitHub popularity.
Rocket.Chat
The communications platform that puts data protection first
★ STARS
45.3k
⑂ FORKS
9.9k
Mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle
★ STARS
36.6k
⑂ FORKS
8.6k
Zulip
Zulip server and web application. Open-source team chat
★ STARS
25.2k
⑂ FORKS
9.8k
Fluxer
A free and open source instant messaging and VoIP platform built for friends, groups, and communities. Self-hosting and more activity in this repository is coming very soon! See the README.
★ STARS
8.5k
⑂ FORKS
488
Campfire
Super simple group chat, without a subscription
★ STARS
4.3k
⑂ FORKS
722
Stoat
The software powering Stoat
★ STARS
3.0k
⑂ FORKS
344
twake-chat
A multi-platform (Flutter) application for connecting to Matrix - an open network for secure, decentralized communication, with your favorite devices.
★ STARS
154
⑂ FORKS
43
// EDITOR'S TAKE
Mattermost is the closest drop-in, with the channel and thread model teams expect plus serious self-hosting and compliance options. Rocket.Chat casts a wider net across omnichannel and customer messaging, Zulip's topic-based threading is genuinely better for busy teams but takes some unlearning, and Campfire is the minimal option for a small server.
// FREQUENTLY ASKED
What is the best open source Pumble alternative?
Rocket.Chat is the most popular open source Pumble alternative by GitHub stars (45,269 stars). The other 6 options are ranked above.
Are these Pumble alternatives self-hostable?
Yes — every project listed here is open source and runs on your own infrastructure. Click into a project to see its license, stars, language, and current health status.
Are they free?
All projects shown are free and open source. Check each project's license page for the terms — most are MIT, Apache 2.0, or AGPL.
// PART OF THESE COLLECTIONS