Sim

Sim is an open-source AI agent platform that lets you build, deploy, and orchestrate intelligent agents at scale. Think of it as the operating system for your AI workforce — a central intelligence layer where you design complex agent workflows, connect them to your tools and data, and deploy them as APIs, chatbots, or scheduled tasks. Built for teams that need more than just a chatbot builder, Sim provides a visual workflow editor with 50+ block types (MCP, LLM, knowledge bases, webhooks, loops, conditions, and more), enterprise-grade execution with versioning, logging, and concurrency control, and seamless integrations with popular services. You can create agents that research the web, process documents, send emails, manage databases, trigger other workflows — all from a single visual canvas. Sim is fully self-hostable with Docker, giving you full control over your data, models, and infrastructure. The platform is Apache-2.0 licensed with 28K+ GitHub stars, supported by an active community. With features like multi-agent orchestration, parallel execution, knowledge bases, MCP tool integration, and scheduled tasks, Sim competes with platforms like n8n, Langflow, and Dify while offering a unique collaborative editing experience.