As of 11-08, the University of Miami has 46 active players on NFL rosters. Second is FSU with 37.
USC, Texas, Florida
LSU North Carolina Kansas Duke Ohio state
For the start of the 2009 NFL regular season LSU & Miami are tied for the most players on NFL rosters with 41 players. current list is at http://espn.go.com/nfl/college 2011 - Texas has 46
Wilson Jerusalem
USC
Miami
North Carolina
ucla duke Arizona
Not in order but here are the top ones: Kentucky, Duke, Kansas, North Carolina, Syracuse, and possibely Florida.
ucla
Number one is Duke.
Michigan