| CountOfUser ID | Full institution name |
| 1014 | University of Michigan |
| 958 | Harvard |
| 915 | University of California Berkeley |
| 736 | University of Chicago |
| 723 | Stanford University |
| 714 | University of Alberta |
| 711 | University of Minnesota |
| 705 | University of Pennsylvania |
| 692 | Pennsylvania State University |
| 664 | University of Wisconsin-Madison |
| 635 | Purdue University |
| 632 | Ohio State University at Columbus |
| 584 | Yale University |
| 579 | University of Illinois at Urbana-Champaign |
| 559 | MIT |
| 532 | University of Toronto |
| 524 | Columbia University |
| 508 | University of Texas - Austin |
| 483 | University of Rochester |
| 473 | University of California San Diego |
| 464 | University of Pittsburgh |
| 438 | University of Illinois at Chicago |
| 412 | Emory |
| 409 | Michigan State University |
| 408 | Iowa State University |
| 386 | SUNY Stony Brook |
| 379 | Wayne State University |
| 327 | Northwestern University |
| 323 | University of North Carolina at Chapel Hill |
| 321 | University of Virginia |
| 315 | University of Kentucky |
| 305 | California Institute of Technology |
| 290 | Texas A&M University |
| 270 | SUNY Buffalo |
| 265 | Georgia Tech |
| 258 | North Carolina State |
| 258 | Indiana University |
| 246 | University of Georgia |
| 235 | University of Washington |
| 233 | Johns Hopkins University |
| 224 | University of Calgary |
| 218 | Boston College |
| 199 | Duke University |
| 187 | Virginia Tech |
| 184 | University of Montreal |
| 184 | Simon Fraser University |
| 181 | University of Connecticut |
| 180 | Florida State University |
| 176 | University of Massachusetts |
| 175 | Washington University |
| 164 | Montana State University |
| 161 | Vanderbilt |
| 157 | University of California Davis |
| 156 | University of Akron |
| 151 | North Dakota State University |
| 142 | University of Iowa |
| 140 | University of Colorado at Boulder |
| 138 | Kent State |
| 137 | Case Western University |
| 134 | Queens University, Kingston Ontario |
| 125 | Rice University |
| 124 | University of Western Ontario |
| 123 | Notre Dame |
| 119 | Georgetown University |
| 117 | University of Cinncinnati |
| 116 | Dartmouth |
| 112 | Texas Christian University |
| 101 | Virginia Commonwealth University |
| 89 | Southwestern Medical Center |
| 89 | New York University |
| 87 | Brown |
| 83 | University of Waterloo |
| 65 | University of Saskatchewan |
| 55 | Worcester Polytechnic Institute |
| 53 | Northeast Louisiana University |
| 36 | Princeton |
| 28 | Drexel |
| 27 | University of Wisconsin-System/Center campuses |
| 24 | University of Michigan (old CrossfirePlusReactions login) |
| 22 | Connecticut College |
| 18 | Purdue University (old CrossfirePlusReactions login) |
| 15 | University of Tennessee Knoxville |
| 13 | Iowa State University (old CrossfirePlusReactions login) |
| 12 | George Mason University |
| 12 | Wayne State University (old CrossfirePlusReactions login) |
| 8 | University of Sherbrooke |
| 6 | Mercer University |
| 4 | Pennsylvania State University (old CrossfirePlusReactions login) |
| 3 | University of Wisconsin-System /Center campuses (old CrossfirePlusReactions login) |
| 3 | MD Anderson Cancer Center, U of Texas |
| 2 | University of Illinois at Chicago (old vanilla Crossfire login) |
| 2 | Ohio State University at Columbus (old CrossfirePlusReactions login) |
| 1 | University of Utah |
| 1 | Michigan State University (old CrossfirePlusReactions login) |
| 1 | University of Colorado at Colorado Springs |