Stonly - Create interactive step-by-step guides
Wordtune - AI-powered writing companion
Drift - A messaging app that helps you grow your business.
Anyword - An AI platform for creating effective marketing copy, trained on tens of millions of successful ads.
HelpKit - HelpKit is the best way to create a self-service knowledge base with Notion. It's super fast, optimized for search engines and it also has a embeddable web widget that you can be installed on your website.
Grammarly - Clear, effective, mistake-free writing everywhere you type.