06/06/2011

• The W3C Markup Validation Service : This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc.
• HTTP Archive : The HTTP Archive tracks how the Web is built.
• EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
• PuPHPet : A simple GUI to set up virtual machines for Web development.
• Ready for Rails 4? : Check easily whether a gem is ready for Rails 4 or not.