Famoso fornato de compresion de sistemas retro: arc
Utilitarios mas estandares de versiones antiguas es:
linux / macos :
arc-5.21p: (unarc/arc)
https://sourceforge.net/projects/arc/
windows:
arc-5.21j-1-bin
https://sourceforge.net/projects/gnuwin32/files/arc/5.21j-1/