Sim is listed under Workflow Automation, in the AI Agents & Automation category on Flocci AI Tools. Visual canvas for building, deploying and monitoring AI agents and workflows. It is free, with no paid plan attached, and it lives at sim.ai.
Sim is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 397 entries on Flocci AI Tools with no upgrade path built in.
Sim works in a normal browser tab with no install. It is available on the web and self-hosting. You can sign in with a Google account.
Sim does 4 things the catalog singles out: Visual canvas for building, deploying and monitoring ai agents and workflows; open source and self-hostable; copilot that helps assemble workflows from natural language; integrations with common tools and knowledge bases.
Flowise is the closest free alternative: it sits in the same Workflow Automation sub-category and is free. Google Opal, LangBot and Langflow also start free. The full list is on the alternatives page.
See the full list →