Most ERD tools were built for DBAs. Schemity is built for software engineers. 9 MB, offline-first, Git-native. Your ERDs live as plain JSON in your repo, commit, diff, and review like code. Drag fields to create relationships. Flexible lines with custom waypoints. Check constraints as first-class citizens. Compare ERD to live DB and generate the exact SQL diff. Supports PostgreSQL, MySQL, SQL Server, Supabase. No Electron. No JVM. No subscription.
Comments, support and feedback
About this launch
Schemity by Son Tran Will be launched May 2nd 2028.