There are many retro computing apps / clients available which let you use Mastodon through classic hardware from the 1980s and 1990s:
APPLE II | Mastodon for Apple II ⧉ |
APPLE MACINTOSH (Pre-OS X) | Macstodon ⧉ |
COMMODORE 64 | MOStodon ⧉ |
COMMODORE AMIGA | amidon ⧉ |
MS-DOS | DOStodon ⧉ |
MVS | BREXXTODON ⧉ |
PALM OS | Heffalump ⧉ |
WINDOWS 95 | Mastodon for Workgroups ⧉ |