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

Reji - Improve your vocabulary hassle-free 📚

Synonymful - Improve your vocabulary and communicate like a pro.

Analyze My Writing - Analyze My Writing is an online text content and readability analyzer.

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.

Expresso - The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for the experienced programmer with an extensive knowledge of regular expressions.