Sim is an open-source workspace for AI agents and workflows Released as an open-source project.
What it does well
- Released as an open-source project.
- Web-based access requires no local installation.
- Functions as a workspace combining AI agent development with workflow orchestration.
Where it falls short
- Pricing details are not publicly disclosed.
- Platform availability is limited to web with no listed IDE, CLI, or desktop support.
Tagged
- Web-based
- Agentic Mode
- Open Source
Compared with similar things
Picked by shared tags inside the AI Coding Agents.
- 01→Latitude
Fix what's breaking in your AI agent
- 02Freemium →n8n
Open-source workflow automation with native LLM nodes — self-host on your own infrastructure.
- 03Freemium →Convex
Reactive backend platform with AI agents and Chef — a no-code app builder built on Convex.
- 04Freemium →AgentGPT
Web-based autonomous agent — give it a goal, watch it self-plan and execute with web browsing and code.
- 05Enterprise →Imbue
Research lab building reasoning agents for code and operations, with API access to its proprietary models.
- 06Freemium →Skyvern
LLM-powered browser automation that handles forms, captchas, and multi-page flows reliably.
Related reading
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Read guide → - The Best Vibe Coding Tools
The best vibe-coding tools aren't another AI model — they're the open-source Claude Code repos you stack on top of it. The right ones turn the agent from a fancy autocomplete into a disciplined senior engineer: it plans before it codes, designs properly, maps your codebase, and gets scanned for security. Here are eight worth installing.
Read guide → - How to Build an MVP with AI
You don't start by building. You start by finding the one assumption that would kill the idea, then build the smallest thing that tests it. Here's the full idea-to-deployed workflow from a live AI build session: research the market with ChatGPT, pick a segment on unit economics, have AI write the PRD, then vibe-code and ship with Claude Code — in a couple of hours, not a quarter.
Read guide →
Featured on Vibedonalds
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</a>Frequently asked questions
- What is Sim?
- Sim is an open-source workspace for AI agents and workflows
- What platforms does Sim support?
- Sim runs on web.
- What category does Sim belong to?
- Sim is in the AI Coding Agents category — Autonomous agents that write, edit, run, and review code. Includes CLI agents, agentic IDE add-ons, and code-review bots.
- What are the downsides of Sim?
- Pricing details are not publicly disclosed. Platform availability is limited to web with no listed IDE, CLI, or desktop support.