UX Challenges - Done reading about UX? Start doing it.
DeliverySlip - DeliverySlip helps simplify, secure, and expedite the burdensome elements of online collaboration...
Befront - Learn UX/UI design skills in practice with bite-sized tasks
GPGTools - Use GPG Suite to encrypt, decrypt, sign and verify files or messages.
Weekly UX Exercise - Receive challenges top companies use to interview designers
Toolsley PGPigeon - Simple but powerful OpenPGP-compatible message encryption webapp.