Create groups, clients, categories and add data to it.
1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
Xmind - Xmind is a brainstorming and mind mapping application.
Lastpass - LastPass is an online password manager and form filler that makes web browsing easier and more secure.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
KeePass - KeePass is an open source password manager. Passwords can be stored in highly-encrypted databases, which can be unlocked with one master password or key file.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.