Jext

 Jext Features

• project management;
• workspaces;
• open zip and internet files;
• mail source code;
• system commands within the console;
• fast typing with HyperTyper and code snippets;
• internal python interpreter;
• plugins.

Jext is based on GPLed libraries, an internal Python interpreter and many XML files. Write your own plugins in Python or Java.

Screenshot

Official site