Awhile back, I reached out to the last known developers of Excelsior! BBS and never got a reply. Earlier yesterday, LamboJay on Amiga.org gave me a heads up that he'd stumbled across the E! support site, which I'd never been able to find.
After looking around a bit, seems they have released it free to the public, which includes a Trapdoor key as well as an Excelsior! BBS key.
Many, many thanks to LamboJay!
http://www.excelsiorbbs.com/index.html
