Dropbox

- Lets you share files between multiple computers.

- Just save something in your Dropbox and it appears on every device where Dropbox resides.

- Available for PC and Mac.

- A version called Droidbox from a third-party developer available on Android.

- Be more productive by always having the files you need right where you are.

Evernote

- Wonderful freeform database.

- Available from the Web, from Windows and from your Mac.

- Versions also available for BlackBerry and Android.

- Stores text, pictures, audio, and more.

- Gives you access to all your data from anywhere.

Springpad

- Take notes and have them available on the Web.

- Simple, easy-to-use interface.

- Create your own categories.

- Great for quick notes to yourself.

GoodReader Lite

- Gives you the ability to view a wide range of documents.

- Can grab documents from the Web. Browse the Web or enter a URL.

- Can connect with your iPhone via wireless.

- Good Reader can import pictures from your iPhone.

- Many configurable options under Settings as to how to handle TXT, PDF, audio and more.

Daily Tracker

- Helps you organize the things that matter to you.

- You can create custom categories for anything you like.

- Can be used as a daily planner

- Keep track of expenses or how much you exercised! Totally up to you.

- Sync all your notes to Google Docs.