Google Doc

Google Docs brings real-time collaboration to your documents, so you and your team can work on the same document at the same time and get things done faster. Import popular document formats like .doc, .docx and .rtf and add images, tables, equations, drawings, links and more. Social commenting makes it easy to get feedback and approvals from the right people. You can be productive even when you’re away from the office with support for creating, viewing and editing documents on your iPhone, iPad, or Android phone or tablet.