Stack AI is listed under Workflow Automation, in the AI Agents & Automation category on Flocci AI Tools. Free plan: 500 monthly runs, 2 projects, 1 seat, community Discord support. It is freemium — a usable free tier with paid plans above it, and it lives at stackai.com.
Stack AI is freemium: there is a free tier you can work in and paid plans above it. It is one of 391 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.
Stack AI does 3 things the catalog singles out: Free plan: 500 monthly runs, 2 projects, 1 seat, community discord support; no-code drag-and-drop builder aimed at compliant/regulated enterprise deployments; soc 2, hipaa and gdpr compliance options at the enterprise tier.
Langflow is the closest free alternative: it sits in the same Workflow Automation sub-category and is free. Windmill, Activepieces and Botpress also start free. The full list is on the alternatives page.
See the full list →