RAR File Open Knife is not a Swiss Army Knife. It is rather like a precious steak knife: very specialised and efficient. The tool only opens RAR archives. As fast as possible. One can open a RAR file by drag 'n' drop, double click or shell integrated context menu. The program comes with short instructions in over 50 languages, the engine is highly optimized. In performance tests RAR File Open Knife was 2-11% faster than 7-Zip etc.