Open-source native macOS HTTP debugging proxy — intercept HTTPS, inspect APIs, mock responses, debug WebSocket & GraphQL. Community-driven. For developers, by developers.




HTTPeep is described as 'Modern HTTP debugging tool, Debug, mock, and rewrite HTTP/HTTPS traffic with composable rules' and is an app in the development category. There are more than 25 alternatives to HTTPeep for a variety of platforms, including Mac, Windows, Linux, iPhone and iPad apps. The best HTTPeep alternative is Fiddler, which is free. Other great apps like HTTPeep are mitmproxy, HTTP Toolkit, Charles and Burp Suite.
Open-source native macOS HTTP debugging proxy — intercept HTTPS, inspect APIs, mock responses, debug WebSocket & GraphQL. Community-driven. For developers, by developers.




CacheGuard Gateway is a free, open-source network security appliance for startups, growing businesses, and SMEs/SMBs that need enterprise-grade protection without the complexity or cost.



Fluxzy Desktop is an HTTP and HTTPS debugging proxy for Windows, macOS, and Linux. If you already use Fiddler, Charles, or Proxyman, you know the drill: capture traffic, inspect requests and responses, tweak them, replay them. Fluxzy does all of that, with support for HTTP/1.



HTTP Debugger captures and decrypts HTTP/HTTPS from any Windows app without proxy setup — HTTP/2, WebSocket, SSE, gRPC and localhost included. Edit and replay requests, modify traffic on the fly, and let an AI assistant read the session over the built-in MCP server.




HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers.


James is a HTTP Proxy and Monitor that enables developers to view and intercept requests made from the browser. It is an open-source alternative to the popular developer tool Charles.

HTTP Headers allows you to quickly see the HTTP header information for the current URL.



PolarProxy is a transparent SSL/TLS proxy. PolarProxy decrypts and re-encrypts TLS traffic, while also saving the decrypted traffic in a PCAP file that can be loaded into Wireshark or an intrusion detection system (IDS).



ReqRes is an open-source, high-performance, modern native web debugging proxy for macOS. It lets you capture, inspect, modify, and intercept HTTP(S) traffic in real time.




A macOS and iOS tool from Apple for simulating poor network conditions such as 3G, Edge, and packet loss during app development.

Working quietly on the Menubar, Surge is a high-performance HTTP/SOCKS5 proxy server. It is capable of intercepting and logging the summary of HTTP traffic, and meanwhile transmitting the traffic to other proxy servers according to the flexible rule system.




HTTP Analyzer is such a handy tool that allows you to monitor, trace, debug and analyze HTTP/HTTPS traffic in real-time. It is used by industry-leading companies including Microsoft, Cisco, AOL and Google.


