UniversalIDE
Add-on based IDE adaptable to any developement platform
..., but translating to another language is as easy as editing an XML file).
More information in the wiki https://sourceforge.net/p/universalide/wiki/ and in the website http://universalide.sf.net
This project uses SharpZipLib: http://icsharpcode.github.io/SharpZipLib/
Some icons are from this creative commons - licensed icon set: http://p.yusukekamiyamane.com/ .