| Open Group | X | 2 |
| X | X Display Manager | 1 |
| X File Explorer Project | X File Explorer | 1 |
| X.Org | X Font Server | 2 |
| X Multimedia System | X Multimedia System | 2 |
| Emule | X Ray | 1 |
| X.Org | X Server | 28 |
| X.Org | X Window System | 4 |
| Controlbyweb | X-301-24I Firmware | 1 |
| Controlbyweb | X-301-I Firmware | 1 |
| Controlbyweb | X-320M-I Firmware | 2 |
| Controlbyweb | X-332-24I Firmware | 1 |
| Controlbyweb | X-400 Firmware | 1 |
| Controlbyweb | X-600M Firmware | 1 |
| Binaryops | X-Assign | 1 |
| Bow Der Kleine | X-Blc | 1 |
| Qtmsoft | X-Cart | 1 |
| Qualiteam | X-Cart | 15 |
| X-Cd-Roast | X-Cd-Roast | 1 |
| Skintech | X-Changer | 1 |
| Infogrames | X-Com Enforcer | 1 |
| St | X-Cube-Safea1 | 1 |
| X-Data-Spreadsheet Project | X-Data-Spreadsheet | 1 |
| Draeger | X-Dock Firmware | 2 |
| X-Doom | X-Doom | 2 |
| Keir Davis | X-Forum | 2 |
| Barron Mccann | X-Kryptor Driver | 1 |
| Barron Mccann | X-Kryptor Secure Client | 1 |
| Counterpath | X-Lite | 1 |
| X-Man Project | X-Man | 1 |
| Xqus | X-News | 2 |
| Hima | X-Opc A+E | 1 |
| Hima | X-Opc Da | 1 |
| Hima | X-Ots | 1 |
| Elastic | X-Pack | 9 |
| Elasticsearch | X-Pack | 1 |
| Elasticsearch | X-Pack Reporting | 1 |
| X-Plane | X-Plane | 2 |
| X-Scripts | X-Poll | 12 |
| Joomla | X-Shop Component | 1 |
| Mambo | X-Shop Component | 1 |
| Netrix | X-Site Manager | 1 |
| Xqus | X-Stat | 2 |
| X-Scripts | X-Statistics | 2 |
| Emerson | X-Stream Enhanced Xefd Firmware | 7 |
| Emerson | X-Stream Enhanced Xegk Firmware | 7 |
| Emerson | X-Stream Enhanced Xegp Firmware | 7 |
| Emerson | X-Stream Enhanced Xexf Firmware | 7 |
| Vaxilu | X-Ui | 1 |
| Enova | X-Wall Asic | 1 |
| X | X.Org | 1 |
| X.Org | X.Org | 7 |
| X | X.Org X11 | 3 |
| X | X.Org-Xserver | 2 |
| Ponton | X/P Messenger | 4 |
| Seil | X1 | 1 |
| Lenovo | X1 Firmware | 5 |
| Seil | X1 Firmware | 2 |
| X10Media | X10 Automatic Mp3 Script | 1 |
| Bintec | X1000 | 1 |
| Dell | X1000 Firmware | 1 |
| Dell | X1008 Firmware | 4 |
| Dell | X1008P Firmware | 4 |
| Dell | X1018 Firmware | 4 |
| Dell | X1018P Firmware | 4 |
| Dell | X1026 Firmware | 4 |
| Dell | X1026P Firmware | 4 |
| Dell | X1052 Firmware | 4 |
| Dell | X1052P Firmware | 4 |
| Asus | X105D Firmware | 1 |
| Supermicro | X10Dai Firmware | 1 |
| Supermicro | X10Dal Firmware | 1 |
| Supermicro | X10Dali Firmware | 1 |
| Supermicro | X10Dax Firmware | 1 |
| Supermicro | X10Dbt-T Firmware | 2 |
| Supermicro | X10Ddw-I Firmware | 2 |
| Supermicro | X10Ddw-In Firmware | 2 |
| Supermicro | X10Ddw3 Firmware | 1 |
| Supermicro | X10Ddw4 Firmware | 1 |
| Supermicro | X10Ddwi Firmware | 1 |
| Supermicro | X10Ddwn Firmware | 1 |
| Supermicro | X10Dgo Firmware | 1 |
| Supermicro | X10Dgo-T Firmware | 2 |
| Supermicro | X10Dgq Firmware | 2 |
| Supermicro | X10Drc Firmware | 1 |
| Supermicro | X10Drc-Ln4+ Firmware | 2 |
| Supermicro | X10Drc-T4+ Firmware | 2 |
| Supermicro | X10Drd Firmware | 1 |
| Supermicro | X10Drd-I Firmware | 2 |
| Supermicro | X10Drd-Int Firmware | 2 |
| Supermicro | X10Drd-Intp Firmware | 2 |
| Supermicro | X10Drd-It Firmware | 2 |
| Supermicro | X10Drd-Itp Firmware | 2 |
| Supermicro | X10Drd-L Firmware | 2 |
| Supermicro | X10Drd-Lt Firmware | 2 |
| Supermicro | X10Drd-Ltp Firmware | 2 |
| Supermicro | X10Drdl Firmware | 1 |
| Supermicro | X10Drff Firmware | 3 |
| Supermicro | X10Drff-C Firmware | 2 |
| Supermicro | X10Drff-Cg Firmware | 2 |
