Evernote: Capture your ideas, things you like, things you hear, and things you see. Share notebooks.
VMware: Access virtual desktop, and be able to do more things on your iPad (e.g. use Outlook)
Google Drive: Access, edit, and share your Google documents. Great for group collaboration.
Dropbox: Access your Dropbox files and open documents in other native iPad apps.
Teaching and Learning Apps
StudyBlue: Create flashcards as an instructor, or have your students create study questions.
Doceri: Create screencasts. Only iPad
Whiteboard: Real-time collaborative whiteboarding over WiFi network
Total Recall: Brainstorm and mind maps
iMindMap: Brainstorm and mind map.
Mobile Learn $: Access RDC Blackboard courses.
Collaborate: Connect to a Collaborate classroom. Off-campus only. Apple only.
Bookshelf: Access Lippincott textbooks.
Socrative: Student response (like clickers); students can use any device, and do not require an account.
MyScript Calculator: Draw equations, in converts to text and calculates automatically.
SketchBook Pro $: Draw.
Canada Topo Maps: Find topo maps. Android only.
TED: Watch TED Talks.
EduPort: Watch videos from TED and other universities. Android only.
iAnnotate: Annotate PDFs.
iFixit: Repair manual for fixing gadgets.
CloudPrint: Print directly from Android device using Chrome.
Kingsoft Office: Productivity software. For Android.
Any.Do: Task manager. Android only.
Pages: Word processing. Apple only.
Social Media Apps
Pulse: Subscribe to news from different sources.
Skype: Video chat.
Twitter: Manage your Twitter account, read and write tweets.