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.
Hemingway - Hemingway App makes your writing bold and clear.
Writefull - Writefull provides you with the tools you need to improve the quality and consistency of your writing.
Grammarly - Clear, effective, mistake-free writing everywhere you type.
Write App - No-distraction writing tool for your productivity.
WriteWell - Jumpstart your writing with the world's best templates.