Parcourse is an open-source platform that transforms YouTube videos into structured learning experiences. Paste any URL and get AI-generated sections, summaries, and quiz questions with instant feedback. The platform builds a personal knowledge graph mapping your growth across topics, supports multi-user administration, and works with any AI model (GPT, Claude, Gemini, Ollama) via a single environment variable. Even works when captions are unavailable using local Whisper transcription.