The PeaZip interface is also easy to use. Just open the application.
For a good tool to open RAR files and create your own, PeaZip is an excellent option.
Supported formats for compression:
ZIP (Deflate)
GZIP
TAR (Uncompressed)
TAR+GZIP (=Tarball)
TAR+BZIP2 (=Tarball)
TAR+LZMA (=Tarball)
Supported formats for decompression:
ZIP
GZIP
BZIP2
TAR
TAR+GZIP
TAR+BZIP2
TAR+LZMA
RAR4
RAR5