Sim

Sim is an open-source, Figma-like visual canvas for building and deploying AI agent workflows. It connects to 100+ LLMs and apps, enabling both technical and non-technical users to compose complex multi-step agent pipelines without writing boilerplate code. Sim supports scheduling, looping, parallel execution, human-in-the-loop steps, and more — all from a single drag-and-drop interface. It is SOC2 compliant and offers a CLI/SDK for programmatic access.

• Visual Workflow Canvas: Drag-and-drop blocks (Agent, Function, Router, Loop, Parallel, Condition, etc.) onto a canvas to compose agent pipelines visually.
• 100+ Integrations: Connect immediately to services like OpenAI, Gemini, Groq, Ollama, Slack, GitHub, HubSpot, Salesforce, Notion, Jira, and many more.
• Flexible Execution Blocks: Use Starter, Webhook, Scheduler, Loop, Parallel, and Condition blocks to control workflow logic and timing.
• Human-in-the-Loop: Insert approval or review steps into any workflow to keep humans in control of critical decisions.
• Knowledge & Vector DB Support: Connect to Pinecone, Qdrant, and other vector databases for RAG-powered agent workflows.
• MCP Integration: Native support for Model Context Protocol (MCP) tools, enabling standardized model-tool communication.
• CLI/SDK Access: Use the Sim CLI or SDK to trigger, manage, and integrate workflows programmatically from your own codebase.
• Guardrails & Evaluators: Add safety and quality checks directly into workflows with built-in Guardrails and Evaluator blocks.
• Open Source: Self-host or use the cloud version; the codebase is publicly available on GitHub with an active community.
• Enterprise-Ready: SOC2 compliant with SSO, custom rate limits, dedicated support, and a dedicated Slack channel for team plans.