| Source Research, Inc. | Florida |
| Source Soft Solutions | New Jersey |
| Source Software, Inc. | Illinois |
| Source Technologies | North Carolina |
| Source Technologies, Inc. | |
| SOURCE Web Solutions, Inc. | Texas |
| Source, Inc. | |
| Source4 | North Carolina |
| SourceAudio | California |
| SourceBox, LLC | |
| SourceDay | Texas |
| SourceForge | California |
| SourceFuse, Inc. | Florida |
| SourceGear | |
| SourceGear, LLC | Illinois |
| Sourcegraph | California |
| SourceHosting.net | New Hampshire |
| Sourceline Media | |
| Sourcely | New York |
| Sourcemap, Inc. | New York |
| Sourcenergy, Inc. | |
| Sourcenergy, Inc. | |
| SourceNet Global | Colorado |
| SourceOne Technologies | Colorado |
| Sourcepass | New York |
| Sourcepoint | New York |
| SourceRepo | South Carolina |
| Sourcescrub | |
| SourceSeek, Inc. | New York |
| SOURCEsem, Inc. | |
| Sourcetable | |
| SourceTech Systems | Texas |
| Sourcetoad | Florida |
| Sout House | |
| South Arkansas College | Arkansas |
| South Bay Circuits, Inc. | Arizona |
| South Bay Software | Florida |
| South Bay Wire and Cable Company, LLC | California |
| South Beach Software | Texas |
| South Carolina Council on Competitiveness | |
| South Carolina Manufacturing Extension Partnership | |
| South Carolina Quantum | |
| South Carolina Research Authority | |
| South Carolina State University | South Carolina |
| South Carolina Tel-Con | South Carolina |
| South Central College | Minnesota |
| South Central Communications | Utah |
| South Central Rural Telecommunications Cooperative | Kentucky |
| South Central SAS Users Group | Texas |
| South Coast College | California |