Shell Based Systems (only Accessible via an SDF shell account)
Most of these systems have been in daily use since our start as a BBS in 1987 notes - send an 'at login time' displayed notification to a user msg - send an instant message to a user across SDF systems (Based on TOPS-20 SEND) bboard - a threaded multi discussion bulletin board com - a multi room interactive chat (Based on TOPS-20 COMMODE) oneliner - a oneline message (anonymous) happening - an anonymous journal
Web Based Systems (these are enabled via the 'maint' command at the shell)
https://mastodon.sdf.org - Mastodon / GNU Social https://pixelfed.sdf.org - Pixelfed (Image Sharing) https://toobnix.org - PeerTube (Video Sharing) https://sdf.org/elearn - An Online Classroom for Electronic Learning https://sdf.org/gallery - An Image Gallery https://motd.org - Wordpress Blogging for the UNIX savvy https://tx0.org - URL Shortening Service https://sdf.org/minecraft - Private MineCraft Server