Apps similar to Packet Capture Pro include Fiddler, which has a free version. Other options are mitmproxy, HTTP Toolkit, Charles and Proxyman. In total there are eight HTTP(S) Debuggers like Packet Capture Pro for Mac, Windows, Linux, iPhone and iPad.
Web Debugging Proxy that logs all HTTP(S) traffic for comprehensive analysis. It allows manipulation of traffic, supports scripting, and extends with .NET. Debugs virtually any application, implementing man-in-the-middle interception with self-signed certificates. Freeware, ideal for developers.
United States
mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP. It provides a console interface that allows traffic flows to be inspected and edited on the fly. It also features mitmdump, a commandline tool that provides a tcpdump-like interface for saving, viewing and...
HTTP Toolkit is a beautiful, cross-platform & open-source HTTP(S) debugging proxy, analyzer & client, with built-in support for modern tools and automatic interception for clients from Docker to Android to iOS.
Spain
EU
Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).
New Zealand
Monitor, intercept and debug HTTP/HTTPS and WebSocket traffic on macOS, iOS, Windows, and Linux. Includes advanced features such as Breakpoint, Map Local/Remote, scripting, filtering, reverse proxy, DNS spoofing, and automation for backend development.
United States
Open-source native macOS HTTP debugging proxy — intercept HTTPS, inspect APIs, mock responses, debug WebSocket & GraphQL. Community-driven. For developers, by developers.
Free native HTTPS debugging proxy for Mac (Linux beta) with a built-in API client and an MCP server for AI coding assistants.
India
Native macOS proxy for inspecting and changing HTTP(S), HTTP/2, WebSocket, gRPC and server-sent-event traffic. It offers breakpoints, mocks, host mapping, regex rewrites, JSON patches, scripting, mobile certificate setup, API collections and security tools.
