Beekeeper Studio : Open Source cross-platform SQL Editor and Database Manager. Use Beekeeper Studio to query and manage your relational databases, like MySQL, Postgres, ...
MySQLTuner : MySQLTuner is a script written in Perl that will assist you with your MySQL configuration and make recommendations for increased performance and stabi...
MindMeister : MindMeister is an online mind mapping tool that lets you capture, develop and share ideas visually.
EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js