Archive


 * A file that is set of files.
 * In additional it compress the contained files.
 * zopfli
 * zlib compatible compression
 * libarchive
 * repository
 * issue tracker
 * document
 * C library for reading/writing archive file.

LHA

 * Opensource implementation

zip

 * most popular archive file format
 * libzip(not zlib)
 * repository
 * Document