| CountOfUser ID | Full institution name |
| 955 | Harvard |
| 863 | University of California Berkeley |
| 860 | Stanford University |
| 848 | University of Pennsylvania |
| 848 | University of Minnesota |
| 802 | University of Alberta |
| 723 | University of Michigan |
| 717 | University of Illinois at Urbana-Champaign |
| 650 | Yale University |
| 640 | MIT |
| 609 | University of Toronto |
| 531 | University of Wisconsin-Madison |
| 505 | Michigan State University |
| 487 | Pennsylvania State University |
| 471 | University of Pittsburgh |
| 466 | Purdue University |
| 410 | Iowa State University |
| 410 | Ohio State University at Columbus |
| 402 | University of Texas - Austin |
| 401 | University of Chicago |
| 371 | Virginia Commonwealth University |
| 367 | SUNY Stony Brook |
| 355 | University of Rochester |
| 346 | University of Kentucky |
| 334 | University of California San Diego |
| 327 | Georgetown University |
| 312 | Columbia University |
| 310 | Northwestern University |
| 302 | University of Virginia |
| 297 | University of Illinois at Chicago |
| 287 | Vanderbilt |
| 286 | Indiana University |
| 277 | Texas A&M University |
| 272 | California Institute of Technology |
| 253 | University of North Carolina at Chapel Hill |
| 251 | Case Western University |
| 247 | Florida State University |
| 239 | University of Connecticut |
| 234 | SUNY Buffalo |
| 230 | Duke University |
| 214 | Johns Hopkins University |
| 213 | Wayne State University |
| 205 | New York University |
| 203 | University of Washington |
| 196 | Mercer University |
| 185 | Virginia Tech |
| 184 | University of Massachusetts |
| 176 | University of California Davis |
| 166 | North Carolina State |
| 161 | Kent State |
| 158 | Georgia Tech |
| 157 | Boston College |
| 128 | Montana State University |
| 124 | Washington University |
| 117 | University of Calgary |
| 104 | University of Western Ontario |
| 101 | North Dakota University |
| 98 | Brown |
| 96 | Texas Christian University |
| 94 | University of Iowa |
| 92 | Purdue University (old CrossfirePlusReactions login) |
| 90 | Simon Fraser University |
| 85 | University of Cinncinnati |
| 84 | University of Colorado |
| 81 | Northeast Louisiana University |
| 72 | Queens University, Kingston Ontario |
| 70 | University of Illinois at Urbana/Champaign (old CrossfirePlusReactions login) |
| 62 | Worcester Polytechnic Institute |
| 55 | University of Chicago (old CrossfirePlusReactions login) |
| 54 | Wayne State University (old CrossfirePlusReactions login) |
| 54 | University of Wisconsin-System /Center campuses (old CrossfirePlusReactions login) |
| 51 | University of Saskatchewan |
| 48 | Dartmouth |
| 41 | Brigham Young University |
| 29 | University of Wisconsin-System/Center campuses |
| 29 | Cal Poly University |
| 17 | University of Wisconsin-Madison (old CrossfirePlusReactions login) |
| 16 | Pennsylvania State University (old CrossfirePlusReactions login) |
| 15 | Ohio State University at Columbus (old CrossfirePlusReactions login) |
| 13 | George Mason University |
| 13 | University of Regina |
| 10 | Iowa State University (old CrossfirePlusReactions login) |
| 5 | University of Illinois at Chicago (old vanilla Crossfire login) |
| 2 | Michigan State University (old CrossfirePlusReactions login) |
| 1 | MD Anderson Cancer Center, U of Texas |
| 1 | University of Michigan (old vanilla Crossfire login) |