Sim

Sim is an open-source platform for building and deploying AI agent workflows, used by over 100,000 builders with 30,000+ GitHub stars. You build agents on a visual canvas by connecting models, tools, logic, and data, with 100+ integrations and support for every major model provider. Workflows deploy as a REST API, scheduled job, webhook, chat interface, or MCP server. Most workflow tools were built for deterministic automation and had AI added later, while Sim was designed for agents from the start. It's Apache 2.0 licensed, so you can self-host the whole platform, and the free tier is fully functional rather than a limited trial.

Sim is an open-source AI workspace that allows teams to build, deploy, and manage AI agents. It integrates various tools and models while providing centralized control over access, spend, and data, thereby simplifying the operational complexities of deploying AI solutions within organizations. Users can create AI agents using a chat interface, visual canvas, or code. Sim connects various integrations, allowing agents to sync data from different sources and manage structured data. The platform also allows users to set governance controls for permissions, spending, and auditing, ensuring secure operation of AI workflows. Sim is designed for teams and organizations looking to automate their workflows with AI agents. It enables collaboration while providing tools for governance and control, making it suitable for enterprises aiming to integrate AI solutions effectively.