@Raziel
The
PKWARE zip archive format supports several compression methods including zlib (AKA deflate), bzip2, lzma, xz and zstd.
Traditionally zip archives only use zlib compression though, and zip archives that use more advanced methods are generally referred to as zipx archives even though the file format is the same.
The xadmaster.library zip client supports only zlib method but Archiver has it's own zip client that makes use of
zip.library which has support for other compression methods, as well as being able to create/modify zip archives and not just read from them.