Ubuntu Christian Edition is an operating system geared towards Christians. It is based on the popular Ubuntu Linux and includes the best available Christian software, such as GnomeSword, a top of the line Bible study program, and several additional modules. It also includes fully integrated Web content parental controls powered by Dansguardian and a graphical tool for adjusting the parental control filter settings. If you are looking for a KDE-based distribution, consider Ichthux.
Ubuntu Privacy Remix is a modified live CD based on Ubuntu Linux. UPR is not intended for permanent installation on a hard disk. The goal of Ubuntu Privacy Remix is to provide an isolated working environment where private data can be dealt with safely. The system installed on the computer running UPR remains untouched. It does this by removing support for network devices as well as local hard disks. Ubuntu Privacy Remix includes TrueCrypt and GnuPG for encryption and introduces "extended TrueCrypt volumes".
Ufficio Zero is an Italian live Linux distribution for the office environment. It has been created for newbies, with simplicity in mind, and has automatic hardware detection/configuration, automount for external devices, and the GNOME desktop with Evolution and the OpenOffice suite. It is based on Ubuntu Linux.
UniPackage is an alternative to distribution-specific packaging systems like dpkg and RPM. UniPackage is a simple system that works on any Linux distribution. UniPackage packages are tar.bz2 archives which contain a self-contained "AppDir" which can be moved anywhere in the filesystem without disturbing the application's installation. In most cases, this packaging does not require changes to the application's code. The issue of dependencies is avoided by bundling all required libraries in the AppDir.
Uruzuki GNU/Linux is a virtual distribution, meaning that there aren't ISO images for installation via CD. It is a complete distribution that resides on an Internet repository. Its applications can be installed on a new minimal Debian system. The software in Uruzuki Linux is the same as that included in uzklive, its live port.
Userful Desktop is a locked-down and secure desktop Linux distribution designed for schools, libraries, kiosks, Internet cafes, digital signage, and public access computers. Customization and control is all done through the cloud: a simple and intuitive administration Web site. The "Userful MultiSeat" desktop virtualization software that supports Ethernet and USB connected zero clients is also included. Desktop settings can be managed for thousands of desktops at once via session profiles, which are created and stored in the cloud. Key features include time management, print cost recovery, Internet filtering, privacy protection, automated clean-up, remote desktop monitoring and control, prepaid cards, and automatic updates. It replaces both DiscoverStation and Desktop Server.
Userful Live CD is a unique multiseat Linux live CD that lets one computer function as two. Booting from this CD temporarily transforms your dual-monitor PC or laptop (with an extra USB keyboard and mouse) into a "dual-seat" PC, supporting two independent users at the same time, each with their own monitor, keyboard, and mouse. A single keystroke links your keyboards and monitors. The live CD also includes Userful Multiplier and Userful Desktop.
V.A.P.E.S. (Virtual admin for Postfix email server) is a Web interface for Postfix administration. This interface is for configuring and administration of virtual domains in Postfix with a PostgreSQL backend. It can configure domains (add, delete, and modify), virtual email addresses (add, modify, and delete), and email forwards (maps).