| CountOfUser ID | Full institution name |
| 819 | Harvard |
| 817 | University of Pennsylvania |
| 755 | Stanford University |
| 711 | Michigan State University |
| 658 | Pennsylvania State University |
| 552 | University of California Berkeley |
| 519 | University of Minnesota |
| 518 | MIT |
| 513 | Indiana University |
| 496 | University of Wisconsin-Madison |
| 491 | University of Michigan |
| 467 | Purdue University |
| 426 | University of Alberta |
| 420 | University of Illinois at Chicago |
| 388 | University of Toronto |
| 382 | Yale University |
| 342 | University of Illinois at Urbana-Champaign |
| 327 | Iowa State University |
| 319 | University of Rochester |
| 311 | Wayne State University |
| 304 | University of Texas - Austin |
| 303 | University of Chicago |
| 296 | University of Pittsburgh |
| 290 | Ohio State University at Columbus |
| 288 | University of California San Diego |
| 282 | SUNY Stony Brook |
| 275 | University of Kentucky |
| 239 | University of Virginia |
| 238 | Northwestern University |
| 234 | Vanderbilt |
| 234 | California Institute of Technology |
| 216 | Columbia University |
| 214 | Virginia Commonwealth University |
| 207 | SUNY Buffalo |
| 200 | Johns Hopkins University |
| 185 | Texas A&M University |
| 178 | University of Western Ontario |
| 172 | University of Washington |
| 170 | New York University |
| 153 | University of Iowa |
| 150 | Virginia Tech |
| 149 | North Carolina State |
| 145 | North Dakota University |
| 141 | University of Calgary |
| 135 | Case Western University |
| 134 | Duke University |
| 132 | Georgia Tech |
| 123 | University of Connecticut |
| 121 | Georgetown University |
| 112 | University of North Carolina at Chapel Hill |
| 107 | Kent State |
| 102 | Worcester Polytechnic Institute |
| 101 | Montana State University |
| 100 | University of Massachusetts |
| 93 | University of Illinois at Urbana/Champaign (old CrossfirePlusReactions login) |
| 92 | Washington University |
| 85 | University of California Davis |
| 72 | Purdue University (old CrossfirePlusReactions login) |
| 56 | Simon Fraser University |
| 56 | University of Wisconsin-System /Center campuses (old CrossfirePlusReactions login) |
| 54 | Queens University, Kingston Ontario |
| 49 | University of Saskatchewan |
| 48 | Michigan State University (old CrossfirePlusReactions login) |
| 44 | University of Regina |
| 38 | Wayne State University (old CrossfirePlusReactions login) |
| 35 | University of Chicago (old CrossfirePlusReactions login) |
| 27 | University of Cinncinnati |
| 26 | University of Wisconsin-Madison (old CrossfirePlusReactions login) |
| 25 | Ohio State University at Columbus (old CrossfirePlusReactions login) |
| 24 | Northeast Louisiana University |
| 17 | Texas Christian University |
| 17 | University of Colorado |
| 16 | Mercer University |
| 16 | George Mason University |
| 15 | Pennsylvania State University (old CrossfirePlusReactions login) |
| 13 | University of Wisconsin-System/Center campuses |
| 11 | Iowa State University (old CrossfirePlusReactions login) |
| 6 | University of Michigan (old vanilla Crossfire login) |
| 5 | Boston College |
| 5 | Cal Poly University |
| 3 | University of Illinois at Chicago (old vanilla Crossfire login) |
| 3 | Brigham Young University |