Encrypted Notepad - Encrypted Notepad is a very simple to use application providing state of the art...
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
CryptoTE - CryptoTE is a text editor with integrated strong cryptography.
Invision - Prototyping and collaboration for design teams
Paranoia Text Encryption - Paranoia Text Encryption encrypts text according to a choice of strong algorithms.
Sketch - Professional digital design for Mac.