LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.
The Raisers Edge - Cloud-based fundraising & donor management software solution built specifically for nonprofits & the entire social good community - get more info here.
Grammarly - Clear, effective, mistake-free writing everywhere you type.
Naviance - Naviance is a college and career preparedness software for students.
Gramlee.com - Online grammar check, proofreading and copy editing services.
Talisma - CRM suite with marketing and KB (Knowledge Base) tools