| Adconga, Inc. | |
| Adcore, Inc. | |
| Adcotron EMS, Inc. | Massachusetts |
| ADD Systems | New Jersey |
| Add-ins.com, LLC | Delaware |
| Add3 | |
| Addend Analytics, LLC | New York |
| Addepar, Inc. | California |
| AddEvent, Inc. | California |
| AddexBio | California |
| Addicting Games | California |
| Addimmune | Maryland |
| Addion | |
| Addionics | |
| Addisoft Consulting, Inc. | Texas |
| Addison | |
| Addison Computers | Louisiana |
| Addison Engineering, Inc. | California |
| AddisonTech | Pennsylvania |
| Addition | New York |
| Additive Implants | Arizona |
| Addmaster Corporation | California |
| Addonis Technologies, Inc. | California |
| AddOptimization.com | California |
| Addsum Business Software, Inc. | Utah |
| Addteq, Inc. | New Jersey |
| AddThis | New Jersey |
| Adducive | Wisconsin |
| AddVant Networking VoIP | New Jersey |
| ADE, Inc. | Michigan |
| Adecto Pharmaceuticals | Massachusetts |
| Adeia, Inc. | |
| ADEK Technical Sales, Inc. | New Hampshire |
| Adela, Inc. | California |
| Adello | California |
| Adelphi Agency | Florida |
| Adelphi University | New York |
| Adelphi University - Computer Science | New York |
| Adelphic Mobile | Massachusetts |
| Adelson Digital, LLC | Florida |
| Ademero, Inc. | Florida |
| Adenin Technologies, Inc. | Massachusetts |
| Adentro, Inc. | California |
| Adept | California |
| Adept Software, Inc. | Florida |
| Adept Solutions | California |
| Adept Technologies, Inc. | Vermont |
| Adeptia | Illinois |
| AdeptID | Massachusetts |
| AdeptPlus | |