Listly by Michael Hyatt
A growing list of productivity apps for the iPad - add/vote your favorite here.
Source: http://michaelhyatt.com/top-ipad-productivity-apps.html
Evernote for iPad lets you make new text and audio notes, as well as view your existing Evernote content all with a swipe or tap of your finger.
Dropbox is a free service that lets you bring your photos, docs, and videos anywhere and share them easily.
Save long web pages to read later, when you have time, on your computer, iPhone, iPad, or Kindle.
Pages is the powerful word processor from iWork, redesigned for iPad and Multi-Touch. So you can create beautiful documents using just your fingers.
Things is a beautifully focused and amazingly intuitive task manager. Other todo applications either oversimplify or are too difficult to use. Things instead offers the perfect balance between ease of use and powerful features.
Very similar to Instapaper in concept, but better
Penultimate is an outstanding handwriting app. A newly added feature makes it much easier to locate older notes and diagrams. Recommend using an iPad stylus with this app (though not necessary).
View, edit and create Microsoft Word, Excel and PowerPoint files & attachments on your iPad, iPhone or iPod Touch.
iAnnotate is an elegant PDF reader and a powerful annotation tool
iAnnotate for iPad Get Productive and Paperless on the Go iAnnotate turns your tablet into a world-class productivity tool for reading, marking up, and sharing PDFs, Word documents, PowerPoint files, and images.
Similar to Things. Manage all your tasks, projects, and to-do's. Sort by specific category, type and place. Also wirelessy sync with your computer through "cloud" database.
Appigo Todo is the most connected iPhone and iPod touch app and makes task management simple and fun. Synchronize with Todo Online, iCal, Outlook, and Toodledo.com.
Cool Reader App
Uses Covey's priority matrix of urgent & important in a simple to do list app. LOVE IT.
Great outliner with notes in it. Wonderful simple UI.
Mindmapping, Vision Board app that will not disappoint
Great for work. Great for school. Popplet is a platform for your ideas. With Popplet you can capture your ideas, sort them visually, and collaborate with others in realtime. Quickly and easily!
Cross-platform task manager. Completely free (no ads) with cloud syncing to other iOS devices or personal computer!
Really stunning mind mapping software - excellent for brainstorming, project planning, note taking...plus it integrates with Dropbox!