NotebookLM
Upload your own sources and ask questions grounded only in them. Turns documents into study guides, briefings and audio overviews.
Grammarly
A writing assistant that follows you everywhere you type. Corrections, tone suggestions and AI rewrites in email, docs and chat.
Compare:Grammarly vs NotebookLMGrammarly vs SynthesiaGrammarly vs Notion AI
What it is
Grammarly works across browsers and desktop apps, so its suggestions appear wherever you write. AI features can rewrite, shorten or change tone on request.
Teams can share style guides so everyone writes in the same voice.
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DeepL
High-quality translation for text and whole documents, plus a writing assistant that polishes tone and clarity.