Xmind - Xmind is a brainstorming and mind mapping application.

Encrypto - Encrypto lets you encrypt files before sending them to friends or coworkers.

MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.

File Lock PEA - Password-encryption of files and directories. File PEA encrypts files and folders with authenticated encryption to protect confidentiality and integrity. The program uses memory-hard key derivation functions to prevent custom hardware attacks.

MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.

EncFSMP - EncFSMP, a program to mount EncFS folders on Windows and OS X.