Perot Systems Corp. in 2009 was sold to Dell Inc.
Dell founder Michael Dell offered best wishes via video.
A newsreel featured Perot as president of his class at the U.S. Naval Academy, shaking hands with President Dwight Eisenhower.
A video clip of actor Dana Carvey, who has done impersonations of Perot, included the comedian praising the Texan as "an American original."
Perot's Reform Party campaign in 1992 was followed by a 1996 bid for the White House.
Here are a few of our favorite Dana Carvey/Ross Perot clips: