* tar (read and write, including GNU extensions)
* pax (read and write, including GNU and star extensions)
* cpio (read and write, including odc and newc variants)
* iso9660 (read and write, including Joliet and Rockridge extensions, with
some limitations)
* zip (read only, with some limitations, uses zlib)
* mtree (read and write)
* shar (write only)
* ar (read and write, including BSD and GNU/SysV variants)
* empty (read only; in particular, note that no other format will accept an
empty file)
* raw (read only)
* xar (read only)
* rar (read only, with some limitations)
* 7zip (read and write, with some limitations)