Links
There are various websites that were helpful in creating Emacsish as well as other Eclipse plugins I find helpful.
This goes without saying. You can get the the latest Eclipse binaries here. On Linux systems you are probably better of using the package manager that came with your system.
This is a great place to search for and post plugins.
This is one of my favorite plugins. It adds various features, such as converting tabs to and from spaces. Show whitespace is also handy.
Editor Enhacements is one of the Lunar Eclipse plugins. I particularly find the rectangular edit feature helpful.