| Git | California |
| GIT Services | Virginia |
| GIT Webservices | New Jersey |
| GITAI | California |
| Gitana Software, Inc. | Massachusetts |
| GitBook, Inc. | California |
| Gitea | |
| Gitential.com, Inc. | |
| GitHub Accelerator | California |
| GitHub Next | California |
| GitHub Universe | |
| GitHub, Inc. | California |
| GitKraken | Arizona |
| Gitty, Inc. | |
| Gitwit | |
| Giva, Inc. | California |
| GiveGab | New York |
| Givego | |
| Givelify | |
| GiveSmart | |
| Giving Tech Labs, LLC | Washington |
| Givinga, Inc. | |
| GivingDNA | |
| GivingTrax, Inc. | |
| Givsly | New York |
| Givzey, Inc. | |
| Gizmeon, Inc. | |
| Gizmo Creative Factory, Inc. | Illinois |
| Gizmo Custom Systems | California |
| Gizmodo | New York |
| Gizmogrind.com | Texas |
| Gizmogul | Massachusetts |
| GJC Software, Inc. | New Jersey |
| Gjirafa, Inc. | |
| GK Media, Inc. | |
| GKG.NET, Inc. | Texas |
| GKV | Maryland |
| Gl Communications, Inc. | Maryland |
| GL Solutions | Oregon |
| GL Synthesis, Inc. | Massachusetts |
| GL Technologies, LLC | |
| Glaceum, Inc. | |
| GLACI, Inc. | Wisconsin |
| Glacial Media | Alaska |
| Glacial Multimedia, Inc. | Maine |
| Glacier | |
| Glacier Computer | Connecticut |
| Glacier Peak Technology, LLC | Washington |
| Glacier Services, Inc. | Alaska |
| Glad Workds | Rhode Island |