| AR Software, LLC | |
| AR Systems, Inc. | Georgia |
| Ara Labs, Inc. | |
| Aracari Biosciences | California |
| Araceli Biosciences | Oregon |
| ArachnidWorks, Inc. | |
| Arada Solutions, LLC | |
| Aragon Advertising | |
| Aragon AI, Inc. | California |
| Araize, Inc. | North Carolina |
| Aralez Bio | |
| Arami Design, LLC | California |
| Aramis Biosciences, Inc. | Massachusetts |
| Arana Software | Nevada |
| ArangoDB | California |
| Aranscia | |
| Aranya Software Technologies, Inc. | Kansas |
| Araptus | |
| Aras | Massachusetts |
| Arasan Chip Systems, Inc. | California |
| ARase Therapeutics, Inc. | |
| Arastu Systems | |
| Aravo Solutions, Inc. | California |
| ARB interactive | |
| ArbelSoft, Inc. | New York |
| ArbiMed, Inc. | Texas |
| Arbisoft | Texas |
| Arbital Health | |
| Arbiter | |
| Arbiter Consulting, LLC | New Mexico |
| Arbiter Systems, Inc. | California |
| ArbiterSports | Utah |
| Arbitsol | |
| Arbo Technologies, Inc. | Georgia |
| Arbol Group, Inc. | Pennsylvania |
| Arbor Americas, Inc. | California |
| Arbor Biotechnologies | Massachusetts |
| Arbor Computer Systems, Inc. | Connecticut |
| Arbor Domains & Hosting | Delaware |
| Arbor Image Corporation | Michigan |
| Arbor Partners, LLC | Michigan |
| Arbor Vita Corporation | |
| ArborBridge | New York |
| Arboretum Ventures | Michigan |
| Arborgold | |
| ArborHost.com | Michigan |
| ArborMetrix | Michigan |
| Arbormoon Software, Inc. | Michigan |
| Arbornet, Inc. | Michigan |
| Arborview Capital | Maryland |