windowBuilder pro for eclipse 3.4 以上版本免费了。还是google有钱。
http://code.google.com/intl/zh-CN/javadevtools/download-wbpro.html
If you are already familiar with installing Eclipse plugins, you can just use the update site URL below for your version of Eclipse.
For bleeding edge features and bug fixes, see the WindowBuilder Pro (BETA) installation page.
Eclipse 3.6 (Helios)
http://dl.google.com/eclipse/inst/d2wbpro/latest/3.6
Eclipse 3.5 (Galileo)
http://dl.google.com/eclipse/inst/d2wbpro/latest/3.5
Eclipse 3.4 (Ganymede)
http://dl.google.com/eclipse/inst/d2wbpro/latest/3.4