Aimed at simplicity, minimal option set.
Usual archive management: Add / Remove / Extract files.
Original, useful tools:
Super-fast built-in Search function: you can search for contents and/or entry names through an archive - no need to extract the archive yourself and to try a search with some file explorer. NB: during the search, files are not even extracted to temp files; all happens quickly in memory.
Fast archive Updater: changes only new, modified files.
Archive Recompression, for reducing further the size of archives. This is useful for squeezing savegames or database backups, or for sending large data by e-mail.
Flat view / Tree view.
Methods supported: Reduce, Shrink, Implode, Deflate, Deflate64, BZip2, LZMA.
Portable (no installation needed, no DLL, no configuration file).