Sim

Sim is an open-source AI workspace for building, deploying, and managing agentic workflows. The official site says teams can describe what they need in plain English and Sim wires blocks, models, and integrations into a working agent. It combines a visual builder, semantic context storage, 1,000+ integrations, and run monitoring with traces, logs, and cost visibility.

• Agent workflow builder — compose logic visually or describe the workflow in natural language • Broad integrations — connect tools such as Slack, HubSpot, Salesforce, and Notion • Grounded context — store tables, files, and knowledge bases semantically for agents to use • Run observability — trace each run block by block with logs and cost • Open-source positioning — official launch and site describe Sim as an open-source workspace for agentic workflows