| Zee Source | California |
| ZeeHosting.com | Illinois |
| Zeejay Digital | Rhode Island |
| Zeek Interactive | California |
| Zeekee | Alabama |
| Zeeknox, Inc. | Texas |
| Zeem Solutions | California |
| Zeerk | Texas |
| Zeesoft | California |
| Zeet | California |
| Zeeto | California |
| Zeeve, Inc. | California |
| ZeeVee, Inc. | Massachusetts |
| Zefr | California |
| ZefSci | California |
| Zego | California |
| Zeguro | California |
| Zehnder Communications, Inc. | Louisiana |
| Zeidman Consulting | California |
| Zeit Medical | |
| ZEITDICE, Inc. | |
| ZeitEnergy, LLC | |
| Zeitview | California |
| Zekiah Technologies, Inc. | Maryland |
| Zelacom EP, LLC | New York |
| Zelar Soft | California |
| Zelda Universe Network | California |
| Zelfanet | New Jersey |
| Zeli Systems | Texas |
| Zelifcam | |
| Zelig | |
| Zeliq | |
| Zelis | Massachusetts |
| Zelkova Ventures | New York |
| Zella Technologies | Louisiana |
| Zello, Inc. | Texas |
| Zelos | California |
| ZelosDx | Arizona |
| Zelta Design Services, LLC | |
| Zema Global | |
| Zemanta | New York |
| Zemax | Washington |
| Zemax Capital Funding, LLC | Pennsylvania |
| Zembula, Inc. | Oregon |
| Zemoga | New York |
| Zen 4 Dummies | Arizona |
| Zen Cart | Oregon |
| Zen Creations Design Studio | Virginia |
| Zen Den Web Design | California |
| Zen Design Group | Michigan |