Astron is an open-source recreation of Disney's OTP server which was used from 2001 to 2013 to power Disney's MMO games such as Toontown Online and Pirates of the Carribean Online. Check out the GitHub repository here: https://github.com/Astron/Astron.
The official Discord server for the Donet networking engine software project, inspired by Disney's OTP (Online Theme Park) server. Visit: https://donet-server.org
