Mellow

Mellow is a rule‑based global transparent proxy client for macOS that intercepts all network traffic and forwards it according to user‑defined criteria. It supports routing decisions based on domain names, IP addresses, GEOIP data, and originating processes, allowing fine‑grained control over which connections are proxied. Multiple proxy protocols and exit points can be configured simultaneously, enabling flexible traffic distribution.

The tool is intended for users who need system‑wide proxy capabilities with detailed rule handling, such as developers, network administrators, or power users who wish to direct specific applications or destinations through particular proxies. Its design mirrors the functionality of Proxifier, offering comparable per‑traffic management on the macOS platform.

Mellow’s implementation relies on the go‑tun2socks core library, and its source repository includes build status information and documentation for configuration. The project is marked as stable but no longer maintained, with a recommendation for Windows users to consider an alternative solution.