Sim

Sim is a comprehensive platform that bridges the gap between no-code simplicity and developer flexibility for building AI agent workflows. It provides a visual interface to orchestrate complex multi-agent systems while maintaining full access to the underlying TypeScript codebase, making it ideal for teams that need both rapid prototyping and production-grade deployments.

Unlike traditional chatbot builders, Sim focuses on agentic workflows where AI agents can chain actions, make decisions, and interact with external tools and APIs. The platform supports major AI providers including OpenAI, Anthropic, Google Gemini, and DeepSeek, allowing you to mix and match models based on your specific use case requirements.

Built on Next.js and React, Sim offers enterprise-ready features like RAG (Retrieval-Augmented Generation) for knowledge-based agents, workflow versioning, and deployment pipelines. Whether you're building customer support automation, data processing pipelines, or complex research assistants, the platform scales from prototype to production without requiring a complete rebuild.

The open-source nature means you maintain full control over your data and deployments, with the flexibility to self-host or extend functionality through custom integrations. The active community of over 26,000 stars demonstrates strong developer adoption and ongoing innovation.