Grammarly - Clear, effective, mistake-free writing everywhere you type.

Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

EssayToolBox - EssayToolBox features lots of tools that checks any writing for grammar and spelling mistakes, detect plagiarism, brainstorms ideas, generates summaries and conclusion, counts words, and much more.

Drops - Visual language learning.

Write App - No-distraction writing tool for your productivity.

Clozemaster - Learn a language through mass exposure to useful vocabulary in context.