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Open-source alternatives to Slack

5 open-source projects on GitHub that describe themselves as an alternative to Slack: nanoclaw, platform, colanode. Compare stars, license and activity, or see Slack on Sealbook.

RepositoryStarsLanguageLicenseActivity
1nanocoai/nanoclawA lightweight alternative to OpenClaw that runs in containers for security. Connects to WhatsApp, Telegram, Slack, Discord, Gmail and other ★ 31kTypeScriptMITActive
2hcengineering/platformHuly — All-in-One Project Management Platform (alternative to Linear, Jira, Slack, Notion, Motion)★ 27.9kTypeScriptEPL-2.0Active
3colanode/colanodeOpen-source and local-first Slack and Notion alternative that puts you in control of your data★ 5.2kTypeScriptApache-2.0Slowing
4Linen-dev/linen.devLightweight Google-searchable Slack alternative for Communities★ 2.8kTypeScriptAGPL-3.0Stale
5TryQuiet/quietA private, p2p alternative to Slack and Discord built on Tor & IPFS★ 2.7kTypeScriptGPL-3.0Active