Product Launch Checklist is a free list for people launching software, from the moment the product works to the first month after launch. It covers SaaS, mobile apps, AI tools, browser extensions, open source projects and developer tools. Every item says why it matters and says when you can skip it. Pick what you are launching and the list gets shorter, not longer: billing and trials come in for SaaS, store review and privacy labels for apps. Your ticks are remembered in the browser, and the whole thing is readable without an account, an email or a payment. It is also built for AI agents. The checklist is available as Markdown, through a no-auth MCP server with get_checklist and get_item tools, and as an agent skill, so an assistant can walk you through your own launch one item at a time.