Sim is an open-source AI workspace platform that enables technical teams to build, deploy, and manage AI agents through a visual workflow builder, natural-language interface, or code-based API. It provides 1,000+ integrations, semantic memory and knowledge bases, multi-LLM support, full run observability with block-by-block tracing, and enterprise governance features including role-based access control, SSO, and audit logs — available as a cloud-hosted SaaS or self-hosted on Docker/Kubernetes.