Portal Development Environment in local machine [Open Source]

Hello, I am Java with Eclipse and WebSphere Portal using guy. I use them at office.

What are the best related open source softwares' to use at home? To explore latest versions of Java and J2EE.

I tried to install 'Oracle Enterprise Pack for Eclipse with Weblogic portal'. IDE is very heavy [350 MB zip file] and I need to install them separately and need to do so much configuration.

Any simple way? Download a file consist of Light weight Eclipse IDE [Eclipse is preferable as i am currently using] with integrated Weblogic Application/Portal server.

Thanks, -Sadoo