Eclipse is an Interactive Development Environment(IDE) which has plug ins for many languages. It is written in Java. As an IDE questions are more likely to be on topic on Stack Overflow.
Eclipse is an Interactive Development Environment(IDE) which has plug ins for many languages.
It and the plugins are written in Java and in general run on Windows and other Unixes as well.
In general it is off topic here, but there are OSX specific configurations and it does get used to help in non programming processes.
