Mover is a system designed to move mail while eliminating as much metadata as possible. In fact, it eliminates virtually all metadata, except for the order and possibly the time that a message arrives at a given site. Addresses are encryption keys. The encrypted messages are sent to all mover locations. The intended recipient uses their key to decrypt the message.
Pybik is an interactive, graphical, single player puzzle about the cube invented by Ernő Rubik. Besides the cube, the program can handle towers and bricks (non-cubic puzzles). Pybik also has solvers, pretty patterns, and a collection of various moves. The cube can be manipulated with the mouse or keyboard. You can change the colors or images on the faces of the cube.
QuickMSG is a secure messaging app for Android and the Linux command line. Its goal is to provide a simple and easy to use chat application with contacts and groups, providing secure chatting with no reliance on any central servers. It offers a simple interface for text chat and sending other content such as images and videos. Chat messages are sent using PGP encrypted email. All a user needs is an email provider which offers IMAP retrieval and SMTP submission (such as Gmail).