Zulip
Open-source chat organised by topic-based threads.
About Zulip
In Zulip’s own words: “Zulip is an organized team chat app for distributed teams of all sizes.”
Zulip is open source, has a free plan and can be self-hosted.
People switching from Slack, Discord and Microsoft Teams often consider Zulip.
Zulip is an alternative to
Similar to Zulip
- ElementSecure, decentralised messaging on the Matrix protocol.
- MattermostOpen-source, self-hosted team messaging for secure environments.
- Rocket.ChatOpen-source team chat with full data control.
- DiscordFree voice, video and text — popular for communities and small teams.
- Google ChatMessaging built into Google Workspace.
- SlackTeam messaging with channels, threads, huddles and thousands of integrations.
- Microsoft TeamsChat, meetings and files, included with Microsoft 365.
- MumbleFree, open-source, low-latency voice chat you can host yourself.
Listed for information; LaunchStall isn’t affiliated with Zulip. The quoted description comes from zulip.com. Features and plans change — check the official site for current details.