Flock alternatives · Team Chat
Open-source alternatives to Flock
Flock is not described as open source on its own site. 7 of the 33 other team communication apps in this directory are open source, according to their own sites.
Flock has a free plan. Paid plans start at $4.50 per user / month, billed annually. All of them are free or have a free plan.
7 tools · Listings checked up to Oct 6, 2026 · Where the facts come from
How each one differs from Flock
- Free plan
Rocket.Chat
Open-source, self-managed chat for security-focused teams
- Rocket.Chat is open source, self-hostable and end-to-end encrypted, according to its own site.
- Flock also covers tasks and video calls.
- Free plan · from $3.50/mo
Zulip
Open-source team chat that organizes channels by topic
- Zulip starts at $3.50 per user / month self-hosted (billed monthly); Cloud from $6.67 billed annually. Flock starts at $4.50 per user / month, billed annually.
- Zulip is open source and self-hostable, according to its own site.
- Flock also covers tasks and video calls.
- Free plan
Element
End-to-end encrypted chat and calls on the Matrix standard
- Element is open source, self-hostable and end-to-end encrypted, according to its own site.
- Flock also covers tasks.
- Free plan · from €7.45/mo
Wire
End-to-end encrypted messaging and calls for organizations
- Wire starts at €7.45 per person / month, paid annually. Flock starts at $4.50 per user / month, billed annually.
- Wire is open source, self-hostable and end-to-end encrypted, according to its own site.
- Flock also covers tasks.
- Free
ONCE Campfire
Self-hosted group chat from 37signals, free and open source
- ONCE Campfire is free. Flock starts at $4.50 per user / month, billed annually.
- Only Flock lists macOS, Windows, Linux, iOS and Android apps.
- ONCE Campfire is open source and self-hostable, according to its own site.
- Flock also covers tasks and video calls.
- Free plan
Mattermost
Self-hosted team messaging with playbooks, calls and boards
- Mattermost is open source and self-hostable, according to its own site.
- Mattermost also covers kanban boards, workflow automation and AI agents.
- Flock also covers tasks, video calls and file sharing.
- Free
Jitsi Meet
Free, open-source video meetings you can self-host
- Jitsi Meet is free. Flock starts at $4.50 per user / month, billed annually.
- Jitsi Meet is open source, self-hostable and end-to-end encrypted, according to its own site.
- Flock also covers tasks, team chat and file sharing.
Common questions
Is there an open-source alternative to Flock?
Yes. Rocket.Chat, Zulip, Element, Wire, ONCE Campfire, Mattermost and Jitsi Meet are open source, according to their own sites.
Is Flock open source?
Flock is not described as open source on its own site. The listing was checked on Oct 6, 2026 against the pages it cites.
When was this checked?
Each listing shows its own date. On this page they run from Oct 5, 2026 to Oct 6, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Flock: the alternatives its listing names first, then the tools that share the most features with it.