Comptext is used to compare two text streams. It's comparison function uses a linear-programming technique. It computes total number of errors, the character error rate (CER) and the bit error rate (BER).

stgit provides similar functionality to quilt (i.e. pushing/popping patches to/from a stack) on top of git.

s3d is a 3d network display server which can be used as 3d desktop environment.

ptunnel is an application that allows you to reliably tunnel TCP connections to a remote host using ICMP echo request and reply packets, commonly known as ping requests and replies. It acts as a proxy and can handle sockets and secured identification.