The Bren Ten from Thomas Dornaus and Michael Dixon are the first ones to have produced the 10mm gun and cartridge for it, with the guidance of Jeff Cooper 1983-1984. Had the company not failed (thats a whole nother story) it maybe even more popular.
FBI seeking a better cartridge/gun studied the 10mm at the time, thus bringing it into the pages of magazines and its limelight.
The Glock 20, introduced in 1990-1991, was developed for the then-growing law enforcement and security forces market for the 10mm Auto.
The Glocks back then were the first plastic guns, many were afraid that they would not hold up.
S&W had it line of 3rg gens 1988, 10xx series guns from 1989 (FBI) and 1990-1993
Smith & Wesson 10mm pistols
1006 - 26,979 units produced 1990-93
1076 - 13,805 units produced 1990-93
1066 - 5,067 units produced 1990-92
1026 - 3,135 units produced 1990-91
1086 - 1,660 units produced 1990-92
1046 - 151 units produced 1991 (only)
Colt had brought out the Delta Elite in 1987 it was said to be the gun that kept the cartridge alive.
However there were some die hard guys that enjoyed the cartridge and keep it going, handloaders understood the ballistics of this great cartridge and continued to supply themselves (me included).
Mike McNett started his Double Tap Ammo company loading the 10mm to hotter loadings than most all ammo companies of the time and that is what kept the 10mm cartridge going.
Glock and Colt were the only ones selling guns chambered for 10mm after S&W stopped production in 1994 so it can be argued either way which kept the 10mm alive. Colt had stopped producing the Delta Elite 1996 and Glock had continued on ever since its started.
By the way there are still other guns chambered for 10mm which include the Tanfoglio EAA line of 10mm. Those discontinued S&W guns are still going strong and are still taking a pounding too. The shame is S&W is not providing any parts any more of any of their 3rd gen guns...
If anyone is interested in more history of the 10mm I would suggest going to this site and do some reading...
http://www.bren-ten.com/website/id7.html
If you want to find out more for the many enthusiast that still cherish the 10mm guns and the ballistics of the cartridge I would suggest the 10mmfirearms forum here;
http://10mm-firearms.com/index.php