Notion AI is available to all users, allowing AI prompts through the space bar, highlighting text, or slash commands, with a focus on integrating AI into the user's existing work environment and offering a flexible drag-and-drop text editor
Freemium 
Rank: #1 
Visits: 148.5M 
Linguix is an AI-powered writing assistant and grammar checker that can check documents in six languages, including English, French, German, Spanish, Portuguese, Italian, and Polish, and offers suggestions to improve writing, as well as a browser extension and web editor to instantly rewrite whole sentences, a Content Quality Score feature, and Style Guides to help employees avoid mistakes.
Freemium Rank: #31 Visits: 182.9K