| Company Name | Software Titles |
|---|---|
| XOsoft | 1 |
| Xtreme Soft srl | 1 |
| XP Software | 1 |
| XenApp | 1 |
| Xuggle | 1 |
| Xingtone | 1 |
| Xanga.com | 1 |
| XenSource | 1 |
| Xumbrus | 1 |
| Xantech | 2 |
| Xequte Software | 2 |
| Xara | 2 |
| XviD Team Koepi | 2 |
| Xmarks | 2 |
| XaviWare Software | 2 |
| Xtravirt Limited | 2 |
| X1 Technologies | 2 |
| XIMETA | 2 |
| Xactware | 2 |
| XemiComputers | 2 |
| XING AG | 2 |
| Xamarin | 2 |
| Xilinx | 3 |
| Xobni | 3 |
| Xcode | 3 |
| Xiph.Org | 3 |
| Xara Group | 6 |
| Xceed Software | 7 |
| Xtranormal | 8 |
| X-Rite | 8 |
| XP Systems | 14 |
| Xilisoft | 15 |
| Xerox | 32 |