Retool

Retool is a software platform for building internal business applications quickly using pre-built UI components, drag-and-drop editors, and connections to databases and APIs. It targets developers and engineering teams at companies who need to create tools like admin panels, dashboards, and CRUD apps without building everything from scratch. The platform allows users to connect to virtually any data source, including PostgreSQL, MySQL, REST APIs, GraphQL, and various SaaS tools, then assemble interfaces using a visual builder alongside custom JavaScript logic. Retool also offers Retool Workflows for automation and Retool Mobile for building mobile-specific internal tools, extending its use beyond web applications. Companies use it to reduce the time spent on repetitive internal tooling development, allowing engineering resources to focus on core product work instead of building one-off admin interfaces.