| Proactive Technologies | Texas |
| Proactivo Commerce | |
| ProArch | Georgia |
| ProAutomated, Inc. | Delaware |
| Probably Genetic, Inc. | |
| ProBass Networks, Inc. | Florida |
| ProBio Biotech Corporation | |
| Problem Solutions | Pennsylvania |
| Problem Solvers | California |
| Probo.CI | Pennsylvania |
| ProBrand International, Inc. | |
| Procal Technologies, Inc. | New Jersey |
| ProCARE | Arizona |
| Procare Software, LLC | Oregon |
| ProCAT | California |
| Procede Software | California |
| Proceed Innovative, LLC | Illinois |
| PROCEPT BioRobotics Corporation | California |
| Procept Marketing | |
| Process and Data Automation, LLC | Pennsylvania |
| Process Computer Technology, Inc. | Texas |
| Process Electronics Corporation | North Carolina |
| Process Global, Inc. | California |
| Process Sciences, Inc. | Texas |
| Process Software | Massachusetts |
| Process Strategies, Inc. | California |
| Process Street | |
| Process Street, Inc. | California |
| Process Technologies Group, Inc. | Illinois |
| Process Technology | Ohio |
| Processa Pharmaceuticals, Inc. | Maryland |
| ProcessMaker | Florida |
| ProcessModel, Inc. | Utah |
| ProcessPlan, LLC | Georgia |
| ProcessUnity, Inc. | Massachusetts |
| ProcessWeaver, Inc. | Texas |
| ProChain Solutions, Inc. | Virginia |
| ProciseDx | California |
| ProciseDx | |
| ProCognis, Inc. | California |
| Procol Tech, Inc. | |
| ProComm | Arizona |
| ProComsat | |
| Procore | California |
| ProctorEdu, LLC | Delaware |
| Proctorio, Inc. | |
| Procure International, Inc. | Florida |
| ProcureDesk | |
| Procurement Sciences, Inc. | |
| Procuro, Inc. | California |