Web

• WellMeet 揪團網
• Ziza 吱喳 - a twitter clone.

Frameworks

• Google App Engine Oil » A MVC framework on Google App Engine.
• Nigiri » A pure JavaScript UI framework.

Plugin or Extensions

• jq4r » jQuery helper methods in Rails.
• firefunp » A firefox extension for push articles to funP.

Misc.

• libezst: http://code.google.com/p/libezst