Beekeeper Studio : Open Source cross-platform SQL Editor and Database Manager. Use Beekeeper Studio to query and manage your relational databases, like MySQL, Postgres, ...
EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
WWW SQL Designer : WWW SQL Designer allows users to create database designs, which can be saved/loaded and exported to SQL scripts. Various databases and languages are s...
Metabase : Metabase is the easy, open source way for everyone in your company to ask questions and learn from data.