Google NotebookLM is a free AI research tool that lets you upload PDFs, Google Docs, and YouTube videos, then ask questions grounded in your own sources.

Dify is a free, open-source platform to build AI chatbots, RAG knowledge bases, and LLM workflows visually — no backend code required.

CrewAI is the most popular open-source multi-agent AI framework with 30M+ downloads. Build teams of AI agents that collaborate on complex tasks — fully...

Ollama lets you run powerful AI models like Llama 3, DeepSeek and Qwen locally on your own computer for free. No cloud accounts, no API fees, full data...