Grammarly - Clear, effective, mistake-free writing everywhere you type.
Subtly - Learn English with smart subtitles on movies and TV shows
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.
BoldVoice - Accent coaching app for non-native English speakers
Editsaurus - Highlights potential pitfalls in your writing to encourage good habits.
Talk to Ri - 🚀App for tech specialists to learn English