| Unsanity | 1 | 1 |
| Unscripts | 1 | 1 |
| Unshield Project | 1 | 1 |
| Unshiftio | 1 | 5 |
| Unspecified | 252 | 4015 |
| Untangle | 2 | 5 |
| Untangle Project | 1 | 2 |
| Untis | 1 | 2 |
| Untrunc Project | 1 | 1 |
| Untrusted Project | 1 | 1 |
| Unu Networks | 1 | 2 |
| Unverse.net | 1 | 4 |
| Unzip Project | 1 | 27 |
| Unzipper Project | 1 | 2 |
| Unzoo | 1 | 4 |
| Uochm | 3 | 3 |
| Uoregon | 1 | 2 |
| Up-imapproxy | 1 | 1 |
| Upasanhar | 1 | 1 |
| Upaytoken Project | 1 | 1 |
| Upc | 3 | 3 |
| Upcoming Events Project | 1 | 1 |
| Update By Case Project | 1 | 1 |
| Updi Network Enterprise | 1 | 3 |
| Updir | 1 | 1 |
| Updraftplus | 3 | 13 |
| Upland Solutions | 1 | 1 |
| Uplawski | 1 | 1 |
| Upload-service | 1 | 1 |
| Uploading Svg, Webp And Ico Files Project | 1 | 3 |
| Uploadscript | 2 | 4 |
| Uplus | 2 | 2 |
| Upoint | 3 | 5 |
| Upperthemes | 1 | 1 |
| Uppy | 1 | 4 |
| Upredsun | 3 | 9 |
| Uprism | 1 | 1 |
| Uprism.io | 1 | 1 |
| Upunzipper Project | 1 | 1 |
| Upwork | 1 | 14 |
| Upx Project | 1 | 34 |
| Urbackup | 2 | 4 |
| Urban | 1 | 2 |
| Urban Base | 1 | 1 |
| Urban-vpn | 1 | 1 |
| Urbanairship | 1 | 2 |
| Urbanterror | 1 | 2 |
| Urdland | 1 | 1 |
| Ureport Project | 1 | 6 |
| Ureport2 Project | 1 | 2 |
| Uresk Links | 1 | 1 |
| Uri-template-lite | 1 | 1 |
| Uri.js Project | 1 | 8 |
| Uriparser Project | 1 | 6 |
| Urkekg | 1 | 4 |
| Url Cloak & Encrypt Project | 1 | 1 |
| Url Redirect Project | 1 | 1 |
| Url Tracker Script | 1 | 2 |
| Url-js Project | 1 | 1 |
| Url-parse Project | 1 | 8 |
| Url-regex Project | 1 | 2 |
| Urlchatbox | 1 | 4 |
| Urllib3 | 1 | 2 |
| 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 | 2 | 6 |
| Usaa | 2 | 2 |
| Usabilitydynamics | 2 | 8 |
| Usagi | 1 | 2 |
| Usanet Creations | 6 | 7 |
| Usavisionsys | 10 | 20 |
| Usb Pratirodh Project | 1 | 3 |
| Usb-creator Project | 1 | 4 |
| Usbank | 1 | 1 |
| Usbguard Project | 1 | 1 |
| Usbpcap Project | 1 | 1 |
| Usbview Project | 1 | 1 |
| Usc | 1 | 2 |
| Uscat Project | 1 | 2 |
| Uscnanbu | 1 | 22 |
| Use Any Font Project | 1 | 2 |
| Useasdf 4444 | 1 | 1 |
| Usebb | 1 | 12 |
| Useful Banner Manager Project | 1 | 1 |
| Useful Simple Open-source Cms Project | 1 | 3 |
| Usememos | 1 | 57 |
| User Access Manager Project | 1 | 3 |
| User Activation Email | 1 | 1 |
| 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 Meta Shortcodes Project | 1 | 1 |
