| isp.net | |
| ISPA, Inc. | Georgia |
| Ispace, Inc. | California |
| iSpatial Techno Solutions | |
| iSpecimen | Massachusetts |
| Ispectra Technologies, LLC | |
| iSpeech, Inc. | |
| iSpeed Solutions | Georgia |
| iSpionage | California |
| Ispirer Systems, LLC | Washington |
| ISPN Network Services | Kansas |
| ISPolitical | California |
| iSpot.tv, Inc. | Washington |
| iSpring Solutions, Inc. | Virginia |
| iSPY | Colorado |
| iSqFt, Inc. | Ohio |
| IsraeliMapped in Boston | Massachusetts |
| IsraelliMappedinNY | New York |
| ISS Group | New Jersey |
| ISS, Inc. | |
| ISSI Services | Maryland |
| ISSQUARED, Inc. | California |
| IssueBurner | California |
| Issuer Direct | North Carolina |
| Issuetrak, Inc. | Virginia |
| Issuu | |
| iSTAM Computer Services, Inc. | Kentucky |
| Istari Oncology, Inc. | North Carolina |
| iStartus | Arizona |
| iStarUSA Group | California |
| iStep | California |
| Isterian Biotech, Inc. | |
| Isthmus Design | |
| ISTO Biologics | Massachusetts |
| iStorage Networks | Massachusetts |
| iStore By St. Moritz | New Jersey |
| Istoria | |
| Istra, LLC | New York |
| iStream Communications | Pennsylvania |
| iStreamPlanet Co. | Nevada |
| iStreet Solutions, LLC | California |
| isubTECH Corporation | California |
| iSupport Software | Washington |
| iSupport.ws | Connecticut |
| IsUtility | Texas |
| iSwapp Global | |
| ISWest, Inc. | California |
| iSync.io | California |
| iSyncSolutions | California |
| iSynergy Webdesign | California |