Recommend archiver software on OSX [duplicate]
Zipeg is free and it seems like a good choice for you. Here is a summary of the features from their website:
✓ popular: .zip, .rar, .7z, .tar, .gz, .tgz, .bzip2, .iso, .cbr, .cbz formats;
✓ rare: .arj, .lha .lzh, .cpio, .rpm, .chm, .z, .war, .ear
✓ decrypts password protected .zip and .rar files (strong AES encryption).
✓ auto-magically combines and opens multipart .zip and .rar files.
✓ shows content of archive and allow you to select what to extract.
BetterZip and Pacifist look like what you're interested in.