| Planetguide.com | Louisiana |
| Planethosting.com, Inc. | South Carolina |
| PlanetiQ | Colorado |
| PlanetLink | California |
| Planetmind Internetworks | Colorado |
| PlanetScale, Inc. | California |
| PlanetTogether | California |
| PlaneWave Instruments | |
| Planful | California |
| PlanGuru, LLC | |
| Planigle, LLC | Texas |
| Planly | |
| PlannedGrowth | |
| Planning Center | California |
| Plano Orthopedic & Sports Medicine Center | |
| Plano Website Design | |
| Planoly | Texas |
| PlanPlus Software | Utah |
| PlanRight Software, Inc. | Michigan |
| PlanSource | Florida |
| PlanSwift Software | Nevada |
| Plant an App, Inc. | California |
| Plantacor, Inc. | |
| Plantd, Inc. | |
| PlanTechHub | Virginia |
| Planted Solar | |
| Planters Broadband | Georgia |
| Plantible Foods, Inc. | California |
| PlantTAGG, Inc. | Texas |
| Planview, Inc. | Texas |
| Plas-Tech Engineering | |
| Plas-Tech Engineering, Inc. | Wisconsin |
| Plas.md, Inc. | Pennsylvania |
| Plasco ID | Florida |
| Plasma Computing Group | Texas |
| Plasma-Therm | Florida |
| PlasmaJet | Georgia |
| Plasmic, Inc. | California |
| Plasmidsaurus, Inc. | |
| Plasmology4 | |
| Plastic SCM | California |
| Plastic Surgery Website Design | Maine |
| Plasticity, Inc. | Virginia |
| Plastiq, Inc. | California |
| Plate IQ | California |
| Plateau | New Mexico |
| Plateau Mediaworks, LLC | Arizona |
| Plateau PC Users Group | Tennessee |
| Platform Science, Inc. | |
| Platform9 | California |