Grammarly - Clear, effective, mistake-free writing everywhere you type.
Yammer - Yammer is a leading enterprise social network used by more than 200,000 companies worldwide, including 85% of the Fortune 500, to get work done smarter and faster. Sign Up Today.
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.
MS SharePoint - Share, organize, and discover information with Microsoft SharePoint. Learn about SharePoint Online, OneDrive for Business, and Apps for SharePoint
Editsaurus - Highlights potential pitfalls in your writing to encourage good habits.
Communifire - Enterprise Social Collaboration Software