InterceptSuite is described as 'Cross-platform (Windows, macOS, Linux) man-in-the-middle proxy for intercepting, inspecting, and modifying non-HTTP network traffic in real time. Unlike Burp Suite, Fiddler, or mitmproxy - which focus on HTTP/HTTPS - InterceptSuite works at the transport' and is a Network Monitor in the network & admin category. There are four alternatives to InterceptSuite for a variety of platforms, including Mac, Windows, Linux, Android and Self-Hosted apps. The best InterceptSuite alternative is mitmproxy, which is both free and Open Source. Other great apps like InterceptSuite are PolarProxy, Packet Capture and Edgeshark.