Builder.io is a collaborative platform that accelerates software product development by unifying code, design, and content workflows in a single environment. It offers two core products — Fusion, a visual IDE for product and engineering teams to build apps, features, and prototypes using their existing codebase and design system, and Publish, an agentic CMS for content and marketing teams to create, optimize, and publish web experiences. The platform is enterprise-ready with SOC 2 Type II compliance, role-based access controls, Git-based review workflows, and integrations with popular frontend frameworks, Git providers, and third-party tools.