Vim-like editing in Eclipse
Eclipse Groovy Development Tools
Multi-OS Engine: Create iOS Apps in Java (or Kotlin ... etc.)
Bnd/Bndtools. Tooling to build OSGi bundles including Eclipse, Maven, a...
Subclipse - Eclipse SVN Provider
Open Explorer plugin for Eclipse
Python IDE for Eclipse
Eclipse plugin adding support for MyBatis SQL Mapper Framework.
AngularJS Eclipse Plugin
Live coding in Python with PyCharm, Emacs, Sublime Text, or even a browser
Java Operator Overloading
Use tern.js in Java context
Java to C++ translator
UML and ER-diagram editor for Eclipse
Eclipse plugin to automatically refactor Java code bases