Writefull - Writefull provides you with the tools you need to improve the quality and consistency of your writing.
World Anvil - World Anvil is a worldbuilding tool for Authors, Storytellers and worldbuilding lovers.
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.
Kanka.io - Kanka.
Hemingway - Hemingway App makes your writing bold and clear.
Notebook.ai - A smart notebook that grows and collaborates with you