| Company Name | Software Titles |
|---|---|
| X Password Manager | 1 |
| X-Chat Aqua version Steve Green | 1 |
| X-Media | 1 |
| X-Ray Application Software | 1 |
| X-Rite | 8 |
| X1 Technologies | 2 |
| X3D Technologies GmbH | 1 |
| Xactware | 2 |
| Xamarin | 2 |
| Xanga.com | 1 |
| Xantech | 2 |
| Xara | 2 |
| Xara Group | 6 |
| Xarios | 1 |
| Xarka Software | 1 |
| Xato Network Security | 1 |
| XaviWare Software | 2 |
| Xcarab | 1 |
| Xceed | 1 |
| Xceed Software | 7 |
| XcelleNet, Inc. | 1 |
| Xcode | 3 |
| Xdrive | 1 |
| XemiComputers | 2 |
| XenApp | 1 |
| XenSource | 1 |
| Xequte Software | 2 |
| Xeran | 1 |
| Xerox | 32 |
| XESystems | 1 |
| xHarbour.com | 1 |
| Xiaoxi Zhang | 1 |
| xiberpix | 1 |
| xIBL Software | 1 |
| xiles | 1 |
| Xilinx | 3 |
| Xilisoft | 15 |
| XIMETA | 2 |
| Xinet | 1 |
| XING AG | 2 |
| Xingtone | 1 |
| Xiph.Org | 3 |
| Xirrus | 1 |
| XLnow | 1 |
| XLNTIdea | 1 |
| Xmark | 1 |
| Xmarks | 2 |
| XMeeting project | 1 |
| XMind | 1 |
| XML Explorer | 1 |