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Team chat

Chat in channels and direct messages, with threads, files and integrations.

Paid apps and their free alternatives

Open one to see every alternative, ranked.

Microsoft Teams
3 free alternatives
Best free option:Mattermost(Strong)License: Open source
Saves $48 USD a year
Slack
4 free alternatives
Top pick:ZulipLicense: Open source
Saves $87 USD a year

Free team chat tools

Every free tool in this category, by name.

Filter alternatives

4 alternatives

Element
Chat and calls client for the Matrix protocol, with rooms, spaces, threads and end-to-end encryption, self-hostable.
License: Open source
- Windows
- macOS
- Linux
- Web
- iOS
- Android
- Self-hosted
Status: Active
This replaces Microsoft Teams and Slack
Mattermost
Open-source self-hosted team chat with channels, threads, calls, playbooks and developer integrations.
License: Open source
- Windows
- macOS
- Linux
- Web
- iOS
- Android
- Self-hosted
Status: Active
This replaces Microsoft Teams and Slack
Rocket.Chat
Open-source team chat server with channels, threads and omnichannel tools, free as a self-hosted Community edition.
License: Open source
- Windows
- macOS
- Linux
- Web
- iOS
- Android
- Self-hosted
Status: Active
This replaces Slack
Zulip
Open-source team chat that groups every conversation into topics, self-hosted for free or on Zulip Cloud.
License: Open source
- Windows
- macOS
- Linux
- Web
- iOS
- Android
- Self-hosted
Status: Active
This replaces Slack