GoAgent是使用跨平台语言Python开发的代理软件，利用Google App Engine的服务器充当代理，帮助用户浏览被封锁的内容。

Setting up polymorphic many-to-many associations in Rails is more difficult, but only slightly.

RVM is a command-line tool which allows you to easily install, manage, and work with multiple ruby environments from interpreters to sets of gems.

Tmux is a terminal multiplexer,Vim is a highly configurable text editor. using them on ubuntu is amazing!

Git 是一个免费的、分布式的版本控制工具，或是一个强调了速度快的源代码管理工具。