A native, open-source Charles Proxy alternative for macOS.
Rockxy is for Mac developers who need HTTP and HTTPS debugging, request replay, breakpoints, scripting, and local traffic inspection without a Java-era workflow or a subscription-first buying model.
Quick answer
Charles Proxy is a long-running HTTP proxy debugger with broad recognition. Rockxy aims at the same day-to-day API debugging job for macOS developers, but with a native SwiftUI/AppKit interface, a free open-source core, and a local-first architecture.
Choose Rockxy if your work is centered on Mac, iOS Simulator, connected iOS devices, REST, GraphQL, WebSocket, replay, breakpoints, and HAR export. Choose a different tool if you need Windows or Linux desktop support today.
Where Rockxy fits
Rockxy is not trying to clone every old proxy feature. It focuses on the API debugging paths developers repeat every day on macOS.
Native Mac workflow
Rockxy is built for macOS with SwiftUI, AppKit, and SwiftNIO instead of a cross-platform Java interface.
Source-visible core
The open-source core lets security-minded developers inspect the capture stack, privacy posture, and release history.
AI-ready debugging
Rockxy ships a first-party MCP server so compatible AI assistants can inspect local captured flows.
Related macOS HTTP debugging searches
Rockxy also answers nearby searches for HTTPS traffic inspection, API debugging, and older proxy-tool replacements.
| Decision point | Charles Proxy | Rockxy |
|---|---|---|
| Platform fit | Known for cross-platform desktop use. | macOS-first today, with native Mac UI and Apple Silicon/Intel support. |
| Source and privacy | Commercial closed-source product. | Free open-source core, local-first traffic handling. |
| Core HTTP debugging | HTTP/HTTPS proxying, SSL proxying, breakpoints, rewrite workflows. | HTTP/HTTPS/WebSocket/GraphQL capture, breakpoints, scripting, replay, HAR import/export. |
| Pricing posture | Paid commercial license. | Free baseline plus one-time Pro licenses; no subscription or auto-renewal. |
FAQ
Is Rockxy a good Charles Proxy alternative?
Yes, for macOS developers who want a native app, open-source core, HTTPS interception, replay, scripting, and local-first traffic handling.
Can Rockxy import or export HAR files?
Yes. Rockxy supports HAR import and export for moving HTTP debugging sessions between tools.
Does Rockxy replace Charles Proxy on Windows or Linux?
Not today. Rockxy is macOS-first. Windows and Linux are planned, but the current public product is for Mac.
Is Rockxy free?
Rockxy has a free open-source core with optional paid Pro licenses for higher limits and paid features.
Try the Mac-native path first.
Download Rockxy, capture a real API flow, and decide from the workflow instead of a feature checklist.