PICO-8 - Lua-based fantasy console for making and playing tiny, computer games and programs.
Encrypto - Encrypto lets you encrypt files before sending them to friends or coworkers.
Moai - Moai is a spiritual successor to one of the elder gods of pixel editing: Autodesk Animator.
VeraCrypt - VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
GnuPG - GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP).
TrueCrypt - TrueCrypt is a leading cross-platform that provides encryption tools that allow you to migrate any encrypted data to virtual disks images on your systems.