FireFlies

An open-source mathematics textbook project dedicated to promoting educational equity, offering PDF resources from primary school to university levels. It features automated merging of split PDF files, serving families and students worldwide.

ChatPDF brings ChatGPT-style intelligence and PDF AI technology together for smarter document understanding. Summarize, chat, and analyze.

One tool that does it all. Search, generate, analyze, and chat—right inside Notion.

Quizlet makes learning fun and easy with free flashcards and premium study tools. Join millions of students and teachers who use Quizlet to create, share, and learn any subject.