Polar Bookshelf

Polar is an integrated reading environment to build your knowledge base. Actively read, annotate, connect thoughts, create flashcards, and track progress. Save time in creating flashcards in one click from text highlights. We use OpenAI's GPT-3 to automate this tedious process. Review them with our spaced repetition algorithm or sync them to Anki. Manage and save for later all your PDFs, EPUBs, and web pages in one place. Use tags, reading progress, and detailed document information to stay on top of your reading. Use the integrated reader to actively read, highlight, take notes, connect thoughts, and track progress with pagemarks. Build your detailed knowledge base with granular highlight tagging, and flashcards, directly from text highlights. Use the Polar Chrome extension to save web pages in your repository. Review your annotations and flashcards directly in Polar using our spaced repetition algorithms.