SensioLabs Security Advisories Checker : The SensioLabs security advisories checker is a simple tool, available as a web service or as an online application, that uses the information from yo...
YAML Builder : A tool for visual layout development of YAML based CSS layouts
Mind42 : Collaborative mind mapping in your browser
EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
Ready for Rails 4? : Check easily whether a gem is ready for Rails 4 or not.