You can use Mastodon on many retro computer systems:
Apple II - https://www.colino.net/wordpress/en/mastodon-for-apple-ii
Apple Macintosh (pre-OS X) - https://github.com/smallsco/macstodon
Commodore 64 - https://github.com/Havoc6502/MOStodon
Commodore Amiga - https://github.com/BlitterStudio/amidon
MS-DOS - https://github.com/SuperIlu/DOStodon
MVS - https://github.com/mainframed/BREXXTODON
Palm OS - https://github.com/knickish/heffalump
Windows 95 - https://github.com/meyskens/mastodon-for-workgroups
@FediTips
Seeing this list makes me want to work on a client for atari mega st
There might be some way to do it through the 3DS browser on a lightweight web interface?
@alienghic @FediTips I'm not ok with any of these operating systems being supported. I remember them too well.