Excalibur (film)
"Excalibur" was the number one film during its opening weekend of 10–12 April 1981, eventually earning $34,967,437 in the United States. , it currently has a 78% "fresh" rating on Rotten Tomatoes based on 41 reviews.
Excalibur BBS
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.