Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
Explain Everything - Explain Everything is an easy-to-use design, screencasting, and interactive whiteboard tool that...
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
Microsoft Whiteboard - The canvas where ideas, content, & people come together.
Wondershare PDFelement - All-in-one PDF editor
Conceptboard - Instant Whiteboards for Teams & Projects