June.ai - A communication hub that replaces email

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

Drift - A messaging app that helps you grow your business.

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.

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Writefull - Writefull provides you with the tools you need to improve the quality and consistency of your writing.