eclipse project FAQ
Eclipse is the open source IDE that has been taking the world by storm well not really but it is highly thought of and becoming very well rounded (I am told).
Here is what they say in the FAQ:
The Eclipse Platform is an open extensible IDE for anything and yet nothing in particular. The Eclipse Platform provides building blocks and a foundation for constructing and running integrated software-development tools. The Eclipse Platform allows tool builders to independently develop tools that integrate with other people’s tools so seamlessly you can’t tell where one tool ends and another starts.