| CountOfUser ID | Full institution name |
| 1017 | University of California Berkeley |
| 968 | University of Michigan |
| 891 | Stanford University |
| 882 | University of Pennsylvania |
| 866 | Harvard |
| 845 | University of Minnesota |
| 823 | Purdue University |
| 743 | Indiana University |
| 688 | Yale University |
| 677 | University of Illinois at Urbana-Champaign |
| 649 | University of Wisconsin-Madison |
| 643 | University of Toronto |
| 602 | Florida State University |
| 598 | University of Alberta |
| 583 | MIT |
| 547 | University of Illinois at Chicago |
| 504 | Michigan State University |
| 503 | Ohio State University at Columbus |
| 500 | University of Texas - Austin |
| 473 | University of Kentucky |
| 473 | Pennsylvania State University |
| 463 | University of Rochester |
| 426 | University of Pittsburgh |
| 394 | University of Virginia |
| 381 | California Institute of Technology |
| 374 | University of Washington |
| 323 | University of Chicago |
| 322 | Iowa State University |
| 321 | Columbia University |
| 319 | Northwestern University |
| 304 | SUNY Stony Brook |
| 302 | University of California San Diego |
| 292 | Virginia Commonwealth University |
| 285 | Wayne State University |
| 282 | Vanderbilt |
| 262 | SUNY Buffalo |
| 248 | Texas A&M University |
| 239 | Mercer University |
| 227 | University of California Davis |
| 224 | Johns Hopkins University |
| 213 | University of North Carolina at Chapel Hill |
| 212 | Georgia Tech |
| 204 | Duke University |
| 197 | Boston College |
| 190 | Montana State University |
| 189 | Kent State |
| 185 | New York University |
| 184 | University of Calgary |
| 179 | North Dakota University |
| 166 | Virginia Tech |
| 149 | University of Western Ontario |
| 148 | University of Massachusetts |
| 144 | Queens University, Kingston Ontario |
| 139 | University of Cinncinnati |
| 133 | Georgetown University |
| 133 | University of Colorado |
| 131 | North Carolina State |
| 126 | Washington University |
| 122 | University of Connecticut |
| 121 | Worcester Polytechnic Institute |
| 120 | University of Iowa |
| 110 | Case Western University |
| 109 | Texas Christian University |
| 106 | Northeast Louisiana University |
| 99 | Brown |
| 67 | University of Saskatchewan |
| 64 | University of Chicago (old CrossfirePlusReactions login) |
| 62 | Simon Fraser University |
| 62 | Dartmouth |
| 57 | University of Wisconsin-System /Center campuses (old CrossfirePlusReactions login) |
| 52 | Purdue University (old CrossfirePlusReactions login) |
| 40 | Wayne State University (old CrossfirePlusReactions login) |
| 34 | Ohio State University at Columbus (old CrossfirePlusReactions login) |
| 21 | Pennsylvania State University (old CrossfirePlusReactions login) |
| 20 | University of Wisconsin-Madison (old CrossfirePlusReactions login) |
| 20 | University of Wisconsin-System/Center campuses |
| 19 | George Mason University |
| 18 | Brigham Young University |
| 11 | MD Anderson Cancer Center, U of Texas |
| 10 | Iowa State University (old CrossfirePlusReactions login) |
| 8 | University of Illinois at Chicago (old vanilla Crossfire login) |
| 6 | University of Regina |
| 2 | Drexel |
| 1 | Cal Poly University |