YES Linux is a server appliance for small and medium size networks to quickly and easily build an Internet presence. It completely installs in under 10 minutes and 2 screens. It features a secure Web server, a secure email server with Web-based email, a firewall, spam filtering, WebDAV support, an FTP server, an SSH server, a PostgreSQL database, the Resin J2EE server, Java, Apache Ant, PHP 5, Autonomous Backups, and complete Web-based administration.
Salvare (from the Latin "to rescue") is a small Linux distribution designed for small, credit-card sized CDs which typically hold around 34MB. More Linux than tomsrtbt but less than Knoppix, it aims to provide a useful workstation as well as a rescue disk. In addition to providing a rescue environment similart to tomsrtbt, it adds OpenSSH, a graphical and text mode Web browser (Links), security tools such as chkrootkit, nmap, and tcpdump, the ability to apt-get install additional software from Debian into tmpfs, the ability to run entirely from RAM, and much more. It's also customizable using a simple source-code based package management system.
The Less Networks Hotspot Server is a free WiFi gateway that runs on a dedicated PC. The one-step installation process automatically installs NoCatAuth and lets you freely join the organic network of WiFi hotspots made famous by the Austin Wireless City Project. The Hotspot server is brandable by venue and provides free authentication for users.