Gboard - Google-powered keyboard with search, GIFs, emojis and more!
Reji - Improve your vocabulary hassle-free 📚
AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.
Grammarly - Clear, effective, mistake-free writing everywhere you type.
Fleksy - Fleksy is the #1 private, white-label virtual keyboard SDK, enabling companies to create unimaginable products.
BurningVocabulary - Touch and highlight YouTube & Netflix subtitles