CoFoundersLab Discuss - Where 300,000+ entrepreneurs get their questions answered
Invision - Prototyping and collaboration for design teams
Commenze - Fully customizable comment sections for any website
Start on Android by Google - Developer program to optimize your app before you launch
Going Indie - A complete guide to becoming an indie software developer
zipBoard - ZipBoard is a web-based visual bug tracking & issue tracking tool that helps developers, testers and project managers collaborate during website and elearning development.