Sim
Sim is the open-source AI workspace where teams build, deploy, and manage AI agents at production scale. Backed by a $7M Series A (YC X25, led by Standard Capital with Paul Graham and Perplexity) and trusted by over 100,000 builders, Sim unifies four surfaces in one SOC2-compliant workspace: a visual agent builder, conversationally-described agents, structured tables your agents can query, files, knowledge bases, and calendar-style scheduled tasks. Connect 1,000+ integrations (Slack, HubSpot, Salesforce, Notion, databases) plus every major LLM via one API key, then watch every run block-by-block with live traces, logs, and real cost. Self-host via `npx simstudio` or Docker, or use the cloud at sim.ai. The Apache-2.0 monorepo (29.1k GitHub stars, v0.7.37 Jul 15 2026) makes Sim the leading open-source n8n/Claude Cowork alternative for teams that want a governed, monitorable agent workforce instead of isolated prompt loops.
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