ActiveX OCX to list , test , and extract tar and tar-gzip files , ability to extract tar files in the format extensions .tar .tgz .tar.gzip tar.gz , ability to list tar files in the format extensions .tar .tgz .tar.gzip tar.gz, the code is optimized for new AMD and Intel processors , the decompression engine is loaded dynamically in the process , ability to pause , resume and cancel the execution, future versions will have list and tar-bzip2 capabilities , bzip2 compression is a new compression format that achieves better compression ratio than gzip based compression