A Fiddler alternative built for Mac developers.
Rockxy is a Mac-native path for developers who want Fiddler-style HTTP debugging, HTTPS inspection, replay, breakpoints, and exports without leaving the local macOS workflow.
Quick answer
Fiddler is known for HTTP debugging across platforms. Rockxy is narrower by design: it focuses on a native Mac app, local-first traffic, source visibility, and the API debugging jobs Mac and iOS developers repeat every week.
If your team works mainly on macOS and wants no required cloud account for local captures, and an open-source core, Rockxy is worth testing first.
Where Rockxy fits
Rockxy maps well to Fiddler search intent when the buyer is really asking for a Mac-first HTTPS inspector.
Mac-first UI
Rockxy uses native macOS patterns for capture lists, inspectors, settings, and keyboard-driven debugging.
Local captures
Captured traffic stays on your Mac. License checks do not include traffic content.
Modern API work
Use HTTP/HTTPS, WebSocket, GraphQL, replay, scripting, HAR, and MCP-assisted inspection.
Related macOS HTTP debugging searches
Rockxy also answers nearby searches for HTTPS traffic inspection, API debugging, and older proxy-tool replacements.
| Decision point | Fiddler | Rockxy |
|---|---|---|
| Platform strategy | Broad cross-platform product family. | macOS-first app with native UI and local developer workflows. |
| Account and cloud posture | Often evaluated as part of a commercial product ecosystem. | No cloud account required for the core local debugging workflow. |
| Debugging focus | HTTP debugging, sessions, composers, rules. | HTTP/HTTPS capture, replay, breakpoints, scripts, GraphQL, WebSocket, HAR, MCP. |
| Source visibility | Commercial closed-source product. | Open-source core under AGPL-3.0 with optional Pro licenses. |
FAQ
Is Rockxy a Fiddler alternative on macOS?
Yes. Rockxy covers the core Mac HTTP debugging workflow: capture, inspect, replay, intercept, script, and export.
Does Rockxy require a cloud account?
No. Rockxy core debugging runs locally on your Mac and does not require a cloud account.
Does Rockxy support Fiddler on Windows workflows?
Rockxy is not a Windows replacement today. It is a macOS app.
What makes Rockxy different from Fiddler Everywhere?
Rockxy emphasizes native macOS UI, a free open-source core, local-first traffic handling, and first-party MCP support.
Try the Mac-native path first.
Download Rockxy, capture a real API flow, and decide from the workflow instead of a feature checklist.