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App builders & workflows

Sim

A workspace for building AI agents and automations visually, connected to hundreds of other apps.

What it does

Sim is a workspace for building, running and monitoring AI agents and automated workflows. You can build agents by dragging blocks around, by chatting, or with code.

Its makers say it connects to more than 270 services, such as Slack, Notion, HubSpot and Salesforce, and to the major AI models. It also includes built-in tables, file storage and knowledge bases your agents can use.

It can run with local AI models through Ollama or vLLM.

Who it's for

Teams and individuals who want to automate work with AI without building everything from scratch.

Can I use it without coding?

Yes. There is a hosted version and a Mac desktop app; running your own copy needs Node.js and Docker. New to this? Start here.

Can I run it?

Runs on
Web browser, Mac, Server, Cloud
Privacy
Your choice: run it on your device or use an online service
API key
Not needed

Try it

  1. Or download the desktop app for macOS 12 or newer.
  2. To host it yourself, install Node.js and Docker, then run the setup wizard.

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • License (Apache-2.0): Permissive: free to use, change and share, including for business.
  • More on staying safe

Where people are talking about it