Retool

Retool is a low-code internal tool development platform that enables engineering teams to build custom internal applications, admin panels, dashboards, and CRUD interfaces by connecting to existing databases and APIs, then assembling user interfaces with drag-and-drop components, dramatically reducing development time compared to building internal tools from scratch. The data source connections support PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch, GraphQL APIs, REST APIs, Amazon S3, Google Sheets, and virtually any data source through custom JavaScript queries, with built-in connection pooling, caching, and query management. The component library provides fifty-plus pre-built interface components including tables with sorting and filtering, forms with validation, charts, maps, editors, rich text inputs, file uploaders, modals, tabs, and navigation elements that connect directly to data queries through a declarative binding system. The query editor writes SQL, GraphQL, JavaScript, or API calls within the platform, with the results automatically available to interface components, enabling rapid iteration between data operations and UI without context switching. The JavaScript integration enables writing custom logic between queries and components, with utility functions, lodash integration, and the ability to create reusable code blocks for complex data transformations. The deployment options include cloud hosting with SOC 2 compliance and self-hosted deployment for organizations requiring data residency control. The version control integrates with GitHub for code review and CI/CD pipelines. The mobile support enables building responsive internal tools accessible on phones and tablets. Designed for engineering teams, operations teams, customer support teams, and organizations building internal tooling.