Outwrite.com - Write better everywhere with Outwrite's proofreading and paraphrasing tool.
Grammarly - Clear, effective, mistake-free writing everywhere you type.
OpenKM.us - OpenKM is a document management software that integrates all essential document management into one easy to use solution.
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.