| Zirtual | Ohio |
| Zirtue | Texas |
| Zita Marketing and Investment, LLC | Delaware |
| Zitara Technologies | California |
| Zito Media | Pennsylvania |
| Zitro Technology Solutions | New Mexico |
| Zittware | Oregon |
| Zivo Bioscience, Inc. | Michigan |
| Zivoke, LLC | New York |
| Zivtech, LLC | Pennsylvania |
| Zivvy, Inc. | California |
| Zix Corporation | Texas |
| Zixi, LLC | Massachusetts |
| Zizzo Group, Inc. | Wisconsin |
| ZL Computers | Connecticut |
| ZL Technologies | California |
| ZLC Software | California |
| Zluri, Inc. | California |
| Zmanda | California |
| ZmartWorkz, LLC | |
| ZMBIZI Financial Services, LLC | Delaware |
| ZMicro | California |
| zNitro | Utah |
| Znode, LLC | Ohio |
| Zobolt Technologies | Nevada |
| Zoca | California |
| Zócalo Design | |
| ZocDoc, Inc. | New York |
| Zocks | |
| Zoeticx, Inc. | California |
| Zoey Advertising | |
| Zog, Inc. | Pennsylvania |
| Zohno, Inc. | California |
| Zoic Studios | California |
| Zoidial, Inc. | New York |
| Zoidiasoft Technologies Astrology Software | Nevada |
| Zoink Media Design, LLC | Texas |
| Zojax Group, LLC | Washington |
| Zoko | Georgia |
| Zokoo Technology, LLC | Colorado |
| Zolak Tech | |
| Zolé, LLC | Washington |
| ZoleyTech, LLC | District of Columbia |
| ZOLL Medical Corporation | Massachusetts |
| Zolmi Salon Software | New York |
| Zolo Carbon Smartech, Inc. | Colorado |
| Zoloz Co., Ltd | Missouri |
| Zoltun Design | |
| Zolve Innovations, Inc. | New York |
| Zomentum | Delaware |