Show HN: Sim Studio – Open-Source Agent Workflow GUI

Sim Studio is a powerful, user-friendly platform for building, testing, and optimizing agentic workflows. Run Run on our cloud-hosted version Self-host How to Self-Host There are several ways to self-host Sim Studio: Option 1: Docker Environment (Recommended) # Clone your forked repository git clone https://github.com/YOUR_USERNAME/sim.git cd sim # Create environment file and update with required environment variables (BETTER_AUTH_SECRET) cp sim/.env.example sim/.env # Start Sim Studio using the provided script docker compose up -d --build or ./start_simstudio_docker.sh After running these commands: Access the Application: Open http://localhost:3000/w/ in your browser The /w/ path is where the main workspace interface is located Useful Docker Commands: # View application logs docker compose logs -f simstudio # Access PostgreSQL database docker compose exec db psql -U postgres -d simstudio # Stop the environment docker compose down # Rebuild and restart (after code changes) doc ... Read full article.