Subtly - Learn English with smart subtitles on movies and TV shows
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.
Substital - Substital is an intelligent chrome extension that will allow learners to learn English with comfort and get the ultimate visibility of the words.
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.