Proxygen

Proxygen is a professional HTTP proxy tool for Mac, iPhone and iPad. Use it to inspect app traffic and test API endpoints, or conduct security analysis of web applications and mobile apps. Message history filters through thousands of messages in a snap, and the app comes with powerful tools like Intercept, Transform and Diff to edit messages on the fly and continue working with the captured data. It's a fully native, modern and lightweight app on all platforms, with blazing fast performance.