Hello everyone
I have been trying to find a way to use eclipse on unity, because for me, Monodevelop is very slow, and as a Java developer, I really prefer the Eclipse interface… I made some research if it was possible, and the only result I got was for android application, which is not what I am aiming for. Any help about this would mean alot. Thanks 
To directly integrate it into Unity and use it as your default editor, it probably isn’t possible since the engine is programmed to respond to only Monodevelop. You might want to go into the actual folder and open your existing scripts with Eclipse manually and drag-and-drop new ones into the folder, but that’s all I got.
As i can understand your requirement, You simply want to edit your scripts into Eclipse IDE…right?? If so, simply click on Edit->prefrences->external tools from your unity editor and change External Script Editor there. It does not require Unity Pro. Hope it helps