| Untrunc Project | 1 | 1 |
| Untrusted Project | 1 | 1 |
| Unu Networks | 1 | 2 |
| Unverse.net | 1 | 4 |
| Unzip Project | 1 | 23 |
| Unzoo | 1 | 4 |
| Uochm | 3 | 3 |
| Uoregon | 1 | 2 |
| Up-imapproxy | 1 | 1 |
| UpSolution | 1 | 1 |
| UpThemes | 1 | 1 |
| Upasanhar | 1 | 1 |
| Upaytoken Project | 1 | 1 |
| Upc | 2 | 2 |
| Upcoming Events Project | 1 | 1 |
| Updateproducts Project | 1 | 2 |
| Updi Network Enterprise | 1 | 3 |
| Updir | 1 | 1 |
| UpdraftPlus | 2 | 2 |
| UpdraftPlus.Com, DavidAnderson | 1 | 5 |
| Updraftplus | 1 | 4 |
| Upland Solutions | 1 | 1 |
| Uplawski | 1 | 1 |
| Uplight | 1 | 1 |
| Upload-service | 1 | 1 |
| Uploadscript | 2 | 5 |
| Uplus | 2 | 2 |
| Upoint | 3 | 5 |
| Upperthemes | 1 | 1 |
| Uppy | 1 | 2 |
| Upredsun | 3 | 8 |
| Upstreamworks | 1 | 1 |
| Uptime Kuma Project | 1 | 1 |
| Uptimed Project | 1 | 1 |
| Upwork | 1 | 4 |
| Upx Project | 1 | 33 |
| Uqcms | 1 | 1 |
| Urbackup | 2 | 4 |
| Urban | 1 | 1 |
| Urban-vpn | 1 | 1 |
| Urbanairship | 1 | 2 |
| Urbanandroid | 2 | 3 |
| Urbanterror | 1 | 2 |
| Urdland | 1 | 1 |
| Ureport2 Project | 1 | 1 |
| Ureport Project | 1 | 6 |
| Uresk Links | 1 | 1 |
| Uri.js Project | 1 | 1 |
| Uriparser Project | 1 | 6 |
| Url-js Project | 1 | 1 |
| Url-parse Project | 1 | 2 |
| Url-regex Project | 1 | 2 |
| Url Cloak \& Encrypt Project | 1 | 1 |
| Url Redirect Project | 1 | 1 |
| Url Tracker Script | 1 | 2 |
| Urlchatbox | 1 | 3 |
| Urlnorm Project | 1 | 1 |
| Urlogy | 1 | 1 |
| Uronode | 1 | 1 |
| Urs Maag | 2 | 2 |
| Urs Wolfer | 1 | 3 |
| Ursoftware | 1 | 1 |
| Urtracker | 1 | 1 |
| Urulu | 1 | 1 |
| Urusoft | 1 | 1 |
| Urve | 1 | 3 |
| Us Robotics | 1 | 1 |
| Usaa | 2 | 2 |
| Usabilitydynamics | 1 | 6 |
| Usagi | 1 | 2 |
| Usanet Creations | 6 | 7 |
| Usb-creator Project | 1 | 4 |
| Usb Pratirodh Project | 1 | 2 |
| Usbank | 1 | 1 |
| Usbguard Project | 1 | 1 |
| Usbpcap Project | 1 | 1 |
| Usbview Project | 1 | 1 |
| Usc | 1 | 2 |
| Uscat Project | 1 | 2 |
| UseBB | 1 | 2 |
| Useasdf 4444 | 1 | 1 |
| Usebb | 1 | 9 |
| Usebottles | 1 | 1 |
| Usedesk | 1 | 3 |
| Usememos | 1 | 1 |
| User Activation Email | 1 | 1 |
| User Local Inc | 1 | 1 |
| User Meta Manager | 1 | 2 |
| User Registration, Login & Landing Pages – LeadMagic | 1 | 1 |
| User-agent Switcher And Manager Project | 1 | 1 |
| User-login-history Project | 1 | 1 |
| User-mode Linux | 1 | 1 |
| UserFeedback Team | 1 | 2 |
| User Access Manager Project | 1 | 2 |
| User Dashboard Project | 1 | 1 |
| User Domain Whitelist Project | 1 | 1 |
| User Home Pages | 1 | 1 |
| User Import Project | 1 | 1 |
| User Management System In Php Stored Procedure Project | 1 | 1 |
| User Photo | 1 | 2 |
