Ballast is a tool for balancing user load across SSH servers that supports user-specific policies as well as traditional policies based on metrics such as CPU load. It includes a simple client, a lightweight data server, and a data collection agent.
Fully Automate ANY Process with *Persistent* SSH/SFTP from One Host
...FullAuto works with the naked protocol, and connects directly with ordinary SSH/SFTP servers that already exist on nearly every UNIX platform, and many Windows and MAC systems. NO OTHER REMOTE SOFTWARE IS NEEDED. FullAuto is written entirely in Perl and has been tested on Linux, UNIX and Windows with Cygwin.
Lomalarga is a VPN-like service based on SSH and Linux.
Lomalarga is a port forwarding (VPN-like) service based on SSH & Linux. Based entirely on open source. The client is written in C# and the administration is based on Linux/lighttpd/PostgreSQL/PHP, with the UI written with Google Web Toolkit.