| CountOfUser ID | Full institution name |
| 999 | Stanford University |
| 920 | Harvard |
| 913 | University of Michigan |
| 888 | University of California Berkeley |
| 875 | MIT |
| 730 | University of Wisconsin-Madison |
| 716 | University of Chicago |
| 711 | University of Alberta |
| 699 | Pennsylvania State University |
| 662 | University of California Irvine |
| 661 | University of Minnesota |
| 622 | University of Texas - Austin |
| 615 | Ohio State University at Columbus |
| 613 | University of Toronto |
| 609 | University of Pennsylvania |
| 605 | Purdue University |
| 605 | University of Pittsburgh |
| 589 | University of Illinois at Urbana-Champaign |
| 517 | University of Rochester |
| 491 | Indiana University |
| 487 | Yale University |
| 444 | University of Illinois at Chicago |
| 433 | University of California San Diego |
| 426 | Columbia University |
| 423 | Iowa State University |
| 416 | Emory |
| 386 | Michigan State University |
| 357 | California Institute of Technology |
| 329 | SUNY Stony Brook |
| 309 | Notre Dame |
| 308 | University of Kentucky |
| 303 | Wayne State University |
| 281 | Northwestern University |
| 276 | Boston College |
| 271 | University of Washington |
| 264 | University of Virginia |
| 264 | Drexel |
| 258 | North Carolina State |
| 258 | SUNY Buffalo |
| 254 | University of North Carolina at Chapel Hill |
| 252 | Texas A&M University |
| 250 | Duke University |
| 245 | Johns Hopkins University |
| 235 | Virginia Tech |
| 226 | Rice University |
| 204 | University of Massachusetts |
| 199 | University of Connecticut |
| 191 | Queens University, Kingston Ontario |
| 189 | Kent State |
| 188 | University of California Davis |
| 183 | Georgia Tech |
| 173 | University of Montreal |
| 171 | Washington University |
| 168 | University of Calgary |
| 159 | Virginia Commonwealth University |
| 159 | University of Iowa |
| 158 | North Dakota State University |
| 157 | Cornell |
| 154 | University of Georgia |
| 154 | Case Western University |
| 153 | Montana State University |
| 142 | University of Cinncinnati |
| 140 | Vanderbilt |
| 137 | University of Wisconsin-System/Center campuses |
| 131 | University of Sherbrooke |
| 131 | University of Colorado at Boulder |
| 130 | Simon Fraser University |
| 125 | Florida State University |
| 124 | Brown |
| 121 | University of Western Ontario |
| 108 | University of Akron |
| 101 | Worcester Polytechnic Institute |
| 100 | Dartmouth |
| 99 | Southwestern Medical Center |
| 93 | Texas Christian University |
| 78 | New York University |
| 75 | Princeton |
| 74 | Georgetown University |
| 45 | University of Saskatchewan |
| 41 | Northeast Louisiana University |
| 37 | MD Anderson Cancer Center, U of Texas |
| 36 | University of Waterloo |
| 29 | Connecticut College |
| 23 | Wayne State University (old CrossfirePlusReactions login) |
| 20 | Purdue University (old CrossfirePlusReactions login) |
| 15 | University of Tennessee Knoxville |
| 10 | Iowa State University (old CrossfirePlusReactions login) |
| 8 | University of Wisconsin-System /Center campuses (old CrossfirePlusReactions login) |
| 8 | Mercer University |
| 3 | Rockefeller University |
| 3 | George Mason University |
| 2 | Pennsylvania State University (old CrossfirePlusReactions login) |
| 2 | University of South Florida |
| 2 | Ohio State University at Columbus (old CrossfirePlusReactions login) |
| 1 | University of Michigan (old CrossfirePlusReactions login) |
| 1 | University of Illinois at Chicago (old vanilla Crossfire login) |