| CountOfUser ID | Full institution name |
| 3288 | Stanford University |
| 1174 | University of California Berkeley |
| 1052 | Pennsylvania State University |
| 1003 | Michigan State University |
| 997 | University of Michigan |
| 912 | University of Minnesota |
| 862 | University of Wisconsin-Madison |
| 861 | University of Toronto |
| 857 | University of California Irvine |
| 806 | Indiana University |
| 791 | Harvard |
| 790 | Purdue University |
| 774 | MIT |
| 763 | University of Texas - Austin |
| 760 | University of California San Diego |
| 736 | University of Illinois at Chicago |
| 731 | University of Chicago |
| 640 | University of Pennsylvania |
| 588 | Yale University |
| 582 | University of Alberta |
| 558 | University of Pittsburgh |
| 555 | University of Illinois at Urbana-Champaign |
| 545 | Columbia University |
| 536 | Ohio State University at Columbus |
| 441 | California Institute of Technology |
| 433 | Emory |
| 431 | Wayne State University |
| 400 | University of Virginia |
| 399 | University of Rochester |
| 398 | Texas A&M University |
| 380 | Northwestern University |
| 374 | University of Connecticut |
| 353 | Duke University |
| 351 | Johns Hopkins University |
| 343 | University of Western Ontario |
| 324 | University of North Carolina at Chapel Hill |
| 318 | Instituto de Quimica-UNAM Ciudad Universitaria Coyoacan, Mexico |
| 313 | University of Calgary |
| 292 | University of Kentucky |
| 284 | University of Washington |
| 283 | SUNY Buffalo |
| 276 | Case Western University |
| 265 | Boston College |
| 252 | Rice University |
| 250 | Cornell |
| 245 | Iowa State University |
| 243 | Florida State University |
| 229 | Montana State University |
| 228 | Queens University, Kingston Ontario |
| 216 | North Dakota State University |
| 212 | Georgia Tech |
| 212 | University of Arizona |
| 212 | North Carolina State |
| 194 | University of California Davis |
| 192 | Kent State |
| 191 | University of Akron |
| 191 | Washington University |
| 190 | Vanderbilt |
| 177 | SUNY Stony Brook |
| 172 | Notre Dame |
| 166 | University of Sherbrooke |
| 166 | Simon Fraser University |
| 151 | University of Cinncinnati |
| 145 | University of Iowa |
| 142 | University of Montreal |
| 142 | University of Georgia |
| 136 | Virginia Commonwealth University |
| 134 | University of Tennessee Knoxville |
| 134 | University of Miami |
| 125 | Virginia Tech |
| 117 | Texas Christian University |
| 112 | Southwestern Medical Center |
| 109 | Georgetown University |
| 101 | Princeton |
| 100 | Brown |
| 96 | Brigham Young University |
| 92 | University of Wisconsin-System/Center campuses |
| 91 | University of Colorado at Boulder |
| 89 | Dartmouth |
| 87 | University of Massachusetts |
| 87 | Worcester Polytechnic Institute |
| 71 | University of Saskatchewan |
| 63 | Northeast Louisiana University |
| 59 | Rutgers |
| 48 | New York University |
| 46 | Wayne State University (old CrossfirePlusReactions login) |
| 46 | Auburn University |
| 42 | Drexel |
| 36 | Mercer University |
| 22 | University of Southern California L.A |
| 18 | Connecticut College |
| 18 | George Mason University |
| 17 | Pennsylvania State University (old CrossfirePlusReactions login) |
| 17 | University of Queensland, Australia |
| 16 | MD Anderson Cancer Center, U of Texas |
| 14 | Villanova University |
| 14 | Purdue University (old CrossfirePlusReactions login) |
| 10 | Rockefeller University |
| 4 | Louisiana State University |
| 2 | Iowa State University (old CrossfirePlusReactions login) |
| 2 | Georgia State |
| 1 | Cal Poly University |