| Lexmark | Xc9225 Firmware | 7 |
| Lexmark | Xc9235 Firmware | 7 |
| Lexmark | Xc9245 Firmware | 7 |
| Lexmark | Xc9255 Firmware | 7 |
| Lexmark | Xc9265 Firmware | 7 |
| Lexmark | Xc92x5 Firmware | 1 |
| Lexmark | Xc9335 Firmware | 2 |
| Lexmark | Xc9445 Firmware | 2 |
| Lexmark | Xc9455 Firmware | 2 |
| Lexmark | Xc9465 Firmware | 2 |
| Xcache Technologies | Xcache | 1 |
| Lars Bahner | Xcal | 1 |
| Xcb Project | Xcb | 5 |
| Xcent | Xcclassified | 1 |
| Philips | Xcelera | 1 |
| Henning Makholm | Xcftools | 3 |
| Xcftools Project | Xcftools | 3 |
| Xchangeboard | Xchangeboard | 3 |
| Xchat | Xchat | 12 |
| Xchat | Xchat-WDK | 1 |
| Xchat | Xchat Gnome | 1 |
| Lenovo | Xclarity Administrator | 1 |
| Artifectx | Xclassified | 1 |
| Eliteweaver | Xclick Cart | 1 |
| Xcloner | Xcloner | 14 |
| Xcmail | Xcmail | 1 |
| Groupeclan.free.fr | Xcms | 4 |
| Xcms | Xcms | 4 |
| Apple | Xcode | 68 |
| Apple | Xcode Tools | 1 |
| Broadcom | Xcom Data Transport | 2 |
| Ca | Xcom Data Transport | 2 |
| Eaton | Xcomfort Ethernet Communication Interface | 1 |
| Xcomputer | Xcomputer | 1 |
| Stanley T. Shebs | Xconq | 3 |
| Samsung | Xcover 4 Firmware | 1 |
| Oracle | Xcp | 4 |
| Netapp | Xcp Nfs | 1 |
| Watchguard | Xcs | 4 |
| Xdforum | Xd Forum | 1 |
| Xda-developers | Xda-developers | 1 |
| Xdelta | Xdelta3 | 1 |
| Freedesktop | Xdg-utils | 7 |
| Gentoo | Xdg-utils | 7 |
| Bryce Harrington | Xdiagnose | 1 |
| Kingsoft | Xdict | 1 |
| X.org | Xdm | 3 |
| Xfree86 Project | Xdm | 3 |
| Typo3 | Xds Staff | 1 |
| Sony | Xe70 Firmware | 3 |
| Synametrics | Xeams | 2 |
| Xecms | Xecms | 2 |
| Xecms Project | Xecms | 2 |
| Jerod Moemeka | Xedus | 3 |
| Xeforum | Xeforum | 1 |
| Gehealthcare | Xeleris Firmware | 2 |
| Gnu | Xemacs | 4 |
| Xemacs | Xemacs | 4 |
| Citrix | Xen | 401 |
| Xen | Xen | 401 |
| Xen Project | Xen | 384 |
| Xensource | Xen | 401 |
| Xensource Inc | Xen | 401 |
| Xen | Xen-unstable | 1 |
| Xen Carousel Plugin Project | Xen Carousel | 1 |
| Xen | Xen Flask Module | 1 |
| Prestashop | Xen Forum | 1 |
| Xensource | Xen Para Virtualized Frame Buffer | 1 |
| Citrix | Xenapp | 10 |
| Citrix | Xenapp Online | 1 |
| Citrix | Xencenterweb | 4 |
| Citrix | Xenclient Xt | 1 |
| Citrix | Xendesktop | 8 |
| Northern Solutions | Xeneo Web Server | 2 |
| Xayr | Xenfcoresharp | 1 |
| Xenforo | Xenforo | 1 |
| Xenis | Xenis.creator Cms | 4 |
| Citrix | Xenmobile | 1 |
| Citrix | Xenmobile Device Manager | 1 |
| Citrix | Xenmobile Device Manager Mdm | 1 |
| Citrix | Xenmobile Mdx Toolkit | 1 |
| Citrix | Xenmobile Server | 22 |
| Xennobb | Xennobb | 4 |
| Ashlar-Vellum | Xenon | 2 |
| Laborator | Xenon | 2 |
| Citrix | Xenserver | 46 |
| Mercedes-benz | Xentry Retail Data Storage Firmware | 1 |
| Xeobook | Xeobook | 2 |
| Intel | Xeon | 1 |
| Intel | Xeon 3040 Firmware | 1 |
| Intel | Xeon 3050 Firmware | 1 |
| Intel | Xeon 3060 Firmware | 1 |
| Intel | Xeon 3065 Firmware | 1 |
| Intel | Xeon 3070 Firmware | 1 |
| Intel | Xeon 3104 Firmware | 1 |
| Intel | Xeon 3106 Firmware | 1 |
| Intel | Xeon 3204 Firmware | 1 |
| Intel | Xeon 3206r Firmware | 1 |
| Intel | Xeon 4108 Firmware | 1 |
| Intel | Xeon 4109t Firmware | 1 |
