Retro computing fans, there are Mastodon apps for many classic systems:

 Apple II
https://www.colino.net/wordpress/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
https://github.com/sdomi/awsom

#RetroComputing