Betwixt

Betwixt provides a local web debugging proxy that presents captured traffic through an interface modeled on the Chrome DevTools Network panel. It runs as a background service listening on http://localhost:8008 and can be configured as the system‑wide HTTP proxy on macOS, Windows, or Ubuntu, or used per‑process via environment variables. The tool records both plain HTTP and, after following additional steps, HTTPS requests, allowing developers to inspect headers, payloads, and timing information outside of a browser.

The software is packaged for macOS as a core component and is released under an MIT license, with source code and pre‑built binaries available on GitHub. Installation can be performed by downloading the latest release, building from source, or using the provided build scripts. Documentation includes guidance for proxy setup on various operating systems and for enabling HTTPS capture.

Betwixt is aimed at developers and testers who need to monitor and analyze web traffic from any application, offering a familiar DevTools‑style view without requiring a browser. Contributions are welcomed, and the project maintains a stable maturity level.