A workspace to build, deploy and monitor AI agents and workflows, visually, conversationally or in code.
Sources and review #
Checked against public documentation on . Suitability guidance is our editorial judgment; this is not a performance benchmark or an endorsement.
Teams that want a visual agent and workflow builder with many integrations and the option to self-host.
You can't run Docker and Node.js 20 or later; self-hosting requires both.
About Sim #
Sim is an open-source workspace for building, deploying and managing AI agents and workflows. It connects more than 1,000 integrations and every major LLM, builds agents visually, conversationally or in code, ingests files, knowledge bases and tables, and monitors runs, logs and schedules. It is available as the hosted sim.ai service, self-hosted with Docker through an interactive setup wizard, or as a macOS desktop app.
Sim is an open-source project written primarily in TypeScript, with 30k stars on GitHub. It was last updated in September 2026.
npx sim-setup
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Sim vs. the alternatives #
| Record | Stars | Pricing | ||
|---|---|---|---|---|
| Simthis listing | 30k | TypeScript | Apache-2.0 | Open source |
| n8n | 206k | TypeScript | — | Open source |
| dify | 157k | TypeScript | — | Open source |
| Langflow | 155k | Python | MIT | Open source |
| activepieces | 25k | TypeScript | — | Open source |
| Temporal | 23k | Go | MIT | Open source |