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Filter by platform, license text, maturity, maintenance cadence, and editorial tags like privacy-focused or self-hosted. Search matches names, summaries, tags, and use cases.

Etherpad

Also strong

Real-time collaborative text editor you can self-host with plugins and exports.

collaborationrealtimeself-hosted

Backend as a service

Supabase

Top pick

Open-source Firebase alternative built on PostgreSQL with auth and realtime.

postgresrealtimebaas