Facebook Flipper

A desktop debugging platform for mobile developers that runs on macOS. It provides a graphical interface for inspecting and interacting with mobile applications, allowing developers to view logs, network traffic, layout hierarchies, and other runtime information. The tool can be launched as a native macOS app or, in newer versions, as a web‑based interface that opens in the default browser while preserving the same UI and functionality.

The platform supports native Android and iOS apps, and includes extensions for React Native, though support for React Native ends with the last Electron‑based release. Users can extend its capabilities by adding custom plugins, and the repository contains documentation for building from source and contributing to the project.

The project is stable and archived as read‑only, indicating that while no new features are being added, the existing codebase remains available for maintenance, custom builds, or integration into other workflows.