| QorusDocs Ltd | Washington |
| Qorvo, Inc. | Oregon |
| QoSIent, LLC | New York |
| Qovery | California |
| Qpex Biopharma, Inc. | |
| QPharma, Inc. | |
| qPharmetra | North Carolina |
| QPhotonics, LLC | Michigan |
| Qples, Inc. | Texas |
| QPS Holdings, LLC | Delaware |
| QQQ Software, Inc. | Virginia |
| QRA Corporation | |
| QRails, Inc. | Colorado |
| Qrono, Inc. | Pennsylvania |
| Qrons, Inc. | New York |
| QRoom, LLC | |
| Qrvey, Inc. | |
| QS Quarterhouse Software, Inc. | Texas |
| QS/1 | South Carolina |
| QSAM Biosciences, Inc. | Texas |
| QSC, LLC | California |
| QScend Technologies, Inc. | Connecticut |
| QSI Technologies, Inc. | Pennsylvania |
| QSolv | California |
| QSPEC Solutions, Inc. | |
| QSR Automations | Kentucky |
| QSROnline | Texas |
| QsrSoft | Indiana |
| QSS Technosoft, Inc. | Minnesota |
| QStar Technologies, Inc. | Colorado |
| QT Imaging, Inc. | California |
| QT Info Systems, Inc. | Illinois |
| QT Medical, Inc. | California |
| QTEQ | Nebraska |
| QtheAgency | |
| Qtonics | Oregon |
| QTrak | Pennsylvania |
| QTS Realty Trust, Inc. | Kansas |
| Quacito | |
| Quad Computing | Maryland |
| Quad Five | |
| Quad Optima Analytics | Illinois |
| Quad9 | California |
| Quadbase Systems | California |
| Quadmo, Inc. | |
| Quadra Cyber | |
| Quadra Digital Solutions | |
| Quadra Website Design | California |
| QuadraMed | Texas |
| QuadraNet Enterprises, LLC | California |