Its user interface is implemented in Java and is open source.Zipeg automatically detects filenames in national alphabets (code pages) and correctly translates them to Unicode. Zipeg is built on top of the 7-Zip backend. It is incapable of compressing files, although it is able to extract compressed ones. With just a click you can open a file and see what is inside. Zipeg is a universal open source archive extractor that supports ZIP and RAR (among other archiving formats).