Startup Ideas AI

SoBrief is a platform offering free book summaries in audio, PDF, and EPUB formats. It provides over 73,530 book summaries, allowing users to read any book in 10 minutes. The platform includes fiction and non-fiction summaries, with audio available in 40 languages. SoBrief offers free PDF/EPUB downloads without requiring sign-up and features top 100 books of all time.

Notebook.ai is a set of tools for writers and roleplayers to create magnificent universes — and everything within them. It's a smart notebook for worldbuilders that grows with your ideas and collaborates with you. With a free account, users have access to core building blocks of fictional universes, personalized writing prompts, unlimited document storage, and a community of other worldbuilders.