| Quantcast | California |
| QuantCo, Inc. | |
| Quantech Corporation | New York |
| Quantech Services, Inc. | Massachusetts |
| Quantela, Inc. | |
| Quanterion Solutions, Inc. | New York |
| Quanterix | Massachusetts |
| Quantgene, Inc. | Oregon |
| QuantHub | Alabama |
| Quantibly | New York |
| Quantic BEI | |
| Quantic Foundry, LLC | |
| Quantic TRM | |
| Quantificare, Inc. | Georgia |
| Quantified | Texas |
| Quantified Biology | |
| Quantifind, Inc. | California |
| Quantify IP | Massachusetts |
| Quantigen, Inc. | Indiana |
| Quantilope | |
| Quantimetrix, Inc. | California |
| Quantinuum Ltd | Colorado |
| Quantiphi | |
| QuantiScientifics, LLC | California |
| Quantisoft, LLC | New Jersey |
| Quantitative Investment Management | |
| Quantitative Science Consulting | Michigan |
| Quantitative Software Management | Virginia |
| QuantiTech, Inc. | Alabama |
| Quantivate, LLC | |
| Quantix, LLC | |
| Quantized Technologies, Inc. | |
| QuantM Technologies, Inc. | New Jersey |
| Quantori | |
| Quantrax Corporation | Maryland |
| Quantrax Corporation, Inc. | Maryland |
| Quantrix | Maine |
| Quantros, Inc. | California |
| Quants | |
| Quantstamp, Inc. | California |
| Quantum Angels Group, LLC | |
| Quantum Art, Inc. | California |
| Quantum at Maryland | Maryland |
| Quantum Capital Group | |
| Quantum Circuits, Inc. | Connecticut |
| Quantum Compliance | Michigan |
| Quantum Composers, Inc. | Montana |
| Quantum Computer Systems, Inc. | New York |
| Quantum Computing Report | |
| Quantum Computing, Inc. | New Jersey |