| Canonical | Ubuntu Linux | 4093 |
| Cisco | Unified Communications Manager | 231 |
| Cisco | Unified Computing System | 102 |
| Huawei | Usg9500 Firmware | 81 |
| Ubuntu | Ubuntu Linux | 69 |
| Milesight | Ur32L Firmware | 65 |
| Splunk | Universal Forwarder | 60 |
| Cisco | Unity Connection | 56 |
| Ibm | Urbancode Deploy | 55 |
| Sco | Unixware | 53 |
| Cisco | Unified Communications Domain Manager | 41 |
| Oracle | Utilities Framework | 37 |
| Denx | U-Boot | 36 |
| Cisco | Unified Communications Manager Im And Presence Service | 34 |
| Redhat | Undertow | 34 |
| Upx Project | Upx | 33 |
| Cisco | Unified Contact Center Express | 32 |
| Umbraco | Umbraco Cms | 32 |
| Zyxel | Usg Flex 100W Firmware | 30 |
| Zyxel | Usg Flex 700 Firmware | 30 |
| Zyxel | Usg Flex 200 Firmware | 30 |
| Zyxel | Usg Flex 500 Firmware | 30 |
| Ultimatemember | Ultimate Member | 29 |
| Ucms Project | Ucms | 28 |
| Nlnetlabs | Unbound | 28 |
| Oracle | Utilities Testing Accelerator | 27 |
| Dell | Unity Operating Environment | 26 |
| Zyxel | Usg Flex 100 Firmware | 26 |
| Cisco | Ucs Director | 26 |
| Huawei | Usg9560 Firmware | 25 |
| Cisco | Unified Meetingplace | 25 |
| Huawei | Usg9520 Firmware | 25 |
| K7Computing | Ultimate Security | 24 |
| Schneider-Electric | U.Motion Builder | 24 |
| Intel | Unison Software | 24 |
| Uvnc | Ultravnc | 23 |
| Huawei | Usg9580 Firmware | 22 |
| Zyxel | Usg Flex 50W Firmware | 22 |
| User-Meta | User Meta User Profile Builder And User Management | 20 |
| Caldera | Unixware | 20 |
| Webmin | Usermin | 20 |
| Ubbcentral | Ubb.Threads | 20 |
| Cisco | Unified Intelligence Center | 20 |
| Zyxel | Usg 20W-Vpn Firmware | 19 |
| Zyxel | Usg Flex 50 Firmware | 19 |
| Cisco | Unified Callmanager | 18 |
| Ultimate Php Board | Ultimate Php Board | 18 |
| Huawei | Uma | 18 |
| Kaseya | Unitrends Backup | 17 |
| Intel | Unite | 17 |
| Userproplugin | Userpro | 16 |
| Cisco | Unified Presence Server | 16 |
| Cisco | Ucs Director Express For Big Data | 16 |
| Cisco | Unified Customer Voice Portal | 16 |
| Stylemixthemes | Ulisting | 16 |
| Unzip Project | Unzip | 15 |
| Info-Zip | Unzip | 15 |
| Huawei | Usg6000V Firmware | 14 |
| Kernel | Util-Linux | 14 |
| Dell | Unisphere For Powermax Virtual Appliance | 14 |
| Rarlab | Unrar | 14 |
| Atos | Unify Openscape 4000 Manager | 14 |
| Zyxel | Usg 2200-Vpn Firmware | 14 |
| Dell | Unisphere For Powermax | 13 |
| Usermin | Usermin | 13 |
| Ultimatemember | User Profile & Membership | 13 |
| Cisco | Unified Computing System Director | 13 |
| Hitachienergy | Unem | 13 |
| Hitachi | Ucosminexus Service Platform | 13 |
| Cisco | Unified Contact Center Enterprise | 13 |
| Alienvault | Unified Security Management | 12 |
| Cisco | Unified Computing System Central Software | 12 |
| Cisco | Unified Computing System Infrastructure And Unified Computing System Software | 12 |
| Cisco | Umbrella | 12 |
| Ubercart | Ubercart | 12 |
| Digital | Unix | 12 |
| Zyxel | Usg20-Vpn Firmware | 12 |
| Oracle | Universal Work Queue | 12 |
| Cisco | Unified Wireless Network Solution Software | 11 |
| Unlimited-Elements | Unlimited Elements For Elementor (Free Widgets, Addons, Templates) | 11 |
| Python | Urllib3 | 11 |
| Gavazziautomation | Uwp 3.0 Monitoring Gateway And Controller Firmware | 11 |
| Wpeverest | User Registration | 11 |
| Updraftplus | Updraftplus | 11 |
| Softing | Uagates | 11 |
| Cisco | Unified Operations Manager | 11 |
| Zyxel | Usg210 Firmware | 10 |
| Zyxel | Usg310 Firmware | 10 |
| Usebb | Usebb | 10 |
| Dell | Unityvsa Operating Environment | 10 |
| Dell | Unity Xt Operating Environment | 10 |
| Atos | Unify Openscape 4000 Assistant | 10 |
| Dell | Update | 10 |
| Edetw | U-Office Force | 10 |
| Ruckuswireless | Unleashed | 10 |
| Ushahidi | Ushahidi Platform | 10 |
| Grandstream | Ucm6204 Firmware | 9 |
| Zyxel | Usg40 Firmware | 9 |
| Rocketsoftware | Unidata | 9 |
| Zyxel | Usg60 Firmware | 9 |
