Encrypted Notepad - Encrypted Notepad is a very simple to use application providing state of the art...
Zenkit - Zenkit is the home you always wanted for your ideas, your projects, your business.
Paranoia Text Encryption - Paranoia Text Encryption encrypts text according to a choice of strong algorithms.
StoryWall - Cards on a wall. But, like, totally digital.
CryptoTE - CryptoTE is a text editor with integrated strong cryptography.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.