Bruno — macOS API explorer (open-source)

Bruno is a free, open-source integrated environment tailored for exploring and testing APIs on macOS. It provides a streamlined interface that helps developers and testers compose requests, examine responses, and run API-related workflows without leaving the application.

Interface and typical workflow

  • Compose HTTP requests quickly using a clean, focused editor.
  • Examine and debug responses with built-in inspectors and formatted output.
  • Save and group requests so common calls can be reused across projects.
  • Run sequences of requests and inspect headers, bodies, and status codes directly in the app.

Authentication and protocol support

  • Support for multiple authentication schemes so Bruno works with a wide range of APIs.
  • Compatibility with common HTTP methods and content types for flexible testing.
  • Customizable request headers and payloads to match API specifications.

Project organization and productivity

  • Store and organize request collections, making it easier to switch between tasks.
  • Tag or group requests for rapid access during development and QA cycles.
  • Export or import collections to share setups with teammates or move between machines.

Community, licensing, and extensibility

  • Open-source licensing encourages contributions and lets teams audit the codebase.
  • Community-driven enhancements and plugins help expand functionality over time.
  • Regular updates from contributors keep the tool evolving with new features and bug fixes.

Free alternatives worth considering

  • Postman — a widely used, feature-rich API client with collaboration tools.
  • Insomnia — a simpler, elegant HTTP client focused on requests and environments.
  • HTTPie — a command-line oriented option for developers who prefer terminal-based interaction.

Technical

Title
Bruno
Requirements
  • Windows
  • Mac
Language
No language has been specified.
Available languages
License
  • Free
Latest update
2025-12-28
Author
Anoop M D Anusree P S and Contributors

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