Excalibur BBS was a Windows-based GUI BBS Client / Server software, developed by Excalibur Communications. Excalibur was released in 1993, and it has not been officially supported since 1999, when Excalibur Communications ceased operations.
Users connected to the BBS by modem or over a TCP/IP connection with the Excalibur Client. For its time, the client provided a rich graphical environment allowing users access to instant messaging, games, music message boards, and web-like hyperlinked navigation screens. Excalibur provided the platform for add on functions called plugins.
These plugins included games with/without animation/sound and expanded functions for file searches, local and Internet E-Mail, Fido net, Who's on, chat, change handle/password, edit your account info etc. Some systems used wave files for background music incorporating a "jukebox" like interface with multiple music choices. Others used very clever screen changes to provide different degrees of visual input. Multiple themes for low, medium and high end graphics cards.
Due to programming limitations, excalibur bbs software and the client do not work on windows OSes newer than windows xp.
The original program was written in Borland C++ by Tim Robinson.