View the source code plugin: http://www.cpupk.com/decompiler/update/
jetty plugin: http://download.eclipse.org/jetty/updates/jetty-wtp/
maven plugin: http://download.eclipse.org/releases/juno
findBugs (check for code issues): http://findbugs.cs.umd.edu/eclipse
subclipse: http://subclipse.tigris.org/update_1.8.x