Grammarian PRO3 - Grammarian PRO3 is a feature-rich grammar checker that enables you to write better content without taking assistance from the English teacher.
Language Learning with Netflix - Use movies as study material for language learning
Gramlee.com - Online grammar check, proofreading and copy editing services.
Langolin - Learn Spanish, French, and German using Netflix
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.
Subtly - Learn English with smart subtitles on movies and TV shows