FREE AI MODELS 

- Hugging Face: open-weight models and free Inference API — https://huggingface.co

- Ollama: run open-weight models locally on your own computer — https://ollama.com

- Google AI Studio: free tier of Gemini models — https://aistudio.google.com

- Groq: free tier for fast inference on open-weight models — https://console.groq.com

- Mistral AI: free experimentation plan — https://console.mistral.ai

- OpenRouter: selection of free models — https://openrouter.ai

AGENT AND AUTOMATION TOOLS

- n8n: free self-hosted Community Edition — https://n8n.io

- Make: free plan — https://www.make.com

- LangChain / LangGraph: open-source frameworks for agents — https://www.langchain.com

- Flowise: open-source visual agent builder — https://flowiseai.com

DEMO AND DOCUMENTATION

- GitHub: public repository — https://github.com

- Excalidraw: architecture diagrams — https://excalidraw.com

- YouTube or Vimeo: demo video hosting