| Megaplex IT Solutions, Inc. | Illinois |
| Megaproxy.com, Inc. | Nevada |
| Megaputer Intelligence, Inc. | Indiana |
| MegaRankings, Inc. | California |
| MegaSeg | Illinois |
| Megasys Hospitality Solutions | Oklahoma |
| Megaventory, Inc. | Texas |
| Megawebserver.com | Florida |
| MegaWolf, Inc. | Connecticut |
| Megneti | |
| MEI Telecom Services | Michigan |
| MeidaGraphics.com, Inc. | Connecticut |
| Meinberg USA, Inc. | California |
| Meissa Vaccines, Inc. | California |
| Meissner Filtration Products, Inc. | |
| Meitheal Pharmaceuticals | |
| Mekanic | |
| Mekanism | |
| Mekanys, Inc. | |
| Mekko Graphics | Massachusetts |
| Mekonos, Inc. | California |
| Mekorma | California |
| Mektec International Corporation | California |
| Mektra, Inc. | California |
| Melabel | |
| Melatech | Maryland |
| Meld Media, Inc. | |
| Melee Multee Meedia | New Jersey |
| Melen, LLC | New Jersey |
| Melike Bitlis Bush | California |
| Melillo Consulting | New Jersey |
| Melinda McCaw Media | |
| Melio | New York |
| Melio Solutions, Inc. | |
| Melior Discovery | Pennsylvania |
| Melior Pharmaceuticals | |
| Melissa, Inc. | California |
| MelliCell | Massachusetts |
| Mellitus, LLC | Massachusetts |
| Mellon Consulting Group, LLC | |
| Mellon Investments Corporation | |
| Melloware, Inc. | Pennsylvania |
| Melodi Health | |
| Melrose PR | |
| MelroseMAC | California |
| Melt Pharmaceuticals, Inc. | |
| Melton Technologies, Inc. | North Carolina |
| Meltwater | California |
| Melzi Surgical | California |
| Mem Labs, Inc. | California |