Fluxzy is an HTTP proxy for recording, examining, debugging, and changing HTTP/1.1, HTTP/2, and WebSocket traffic over plain or secure connections.
Alternatives to ProxyBoy
NetworkSpy is an application-level HTTP/HTTPS debugging tool for capturing and analyzing network traffic.
Moni Proxy captures and inspects HTTP/HTTPS traffic directly on devices, with tools to mock, rewrite, and replay requests.
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Reqable
Reqable is a cross-platform HTTP development and debugging tool for API testing and traffic analysis, available on Android, iOS, Linux, macOS and Windows.
Free planAndroidiOSAPILinux8.0From $49.90 a year - 5
ProxyHawk
ProxyHawk is a native macOS proxy debugger for capturing and inspecting HTTP traffic from selected devices.
Free planAndroidiOSmacOS7.8From ₹3,750 a year - 6

mitmproxy
mitmproxy is a free set of tools for inspecting and changing HTTP/1, HTTP/2, WebSocket, and SSL/TLS traffic as it passes through a proxy.
Free planOpen sourceWebAPILinuxmacOS7.7Free plan - 7
Proxyman
Proxyman is an HTTP debugging proxy for capturing, decrypting, and mocking HTTP(S) requests and responses.
AndroidiOSAPILinux7.6From $99 a year - 8

Requestly
Requestly is a desktop API client with web access for building, organizing, documenting, and testing APIs.
LinuxmacOSWindows7.0From $10 a month - 9

Fiddler Everywhere
Fiddler Everywhere captures and works with HTTP/S traffic moving across applications, services, and devices.
AndroidiOSLinuxmacOS6.9From $84 a year - 10

HTTP Toolkit
HTTP Toolkit is an open-source tool for debugging, testing, and building with HTTP.
Free planAndroidiOSWebLinux6.9Free plan - 11
Rockxy
Rockxy is an open-source debugging proxy for macOS that captures and inspects app and device traffic, then lets users modify, replay, and compare requests.
Free planiOSmacOS6.8From $9 a month - 12
Charles
Charles is a web proxy and HTTP monitor for viewing traffic sent and received by browsers and other internet applications configured to use it.
iOSLinuxmacOSWindows6.7$50 one-time - 13
Probe
Probe is a local HTTP/HTTPS debugging proxy and API client for examining app traffic, adjusting requests and responses, mocking endpoints, and automating API work.
Free planAndroidiOSAPImacOS6.7Free plan - 14
Proxyfor
Proxyfor is a free, open-source proxy CLI for capturing and inspecting HTTP(S) and WebSocket traffic.
Free planWebLinuxmacOSSelf-hosted6.7Free plan - 15
Tucano Proxy
Tucano Proxy is an open-source HTTP/HTTPS debugging proxy with a native CLI, terminal inspector, local web UI, and desktop app.
Free planWebAPIExtensionLinux6.7Free plan - 166.6$25 one-time
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Sniper
Sniper is a free, open-source desktop proxy for intercepting, inspecting, and modifying HTTP/HTTPS traffic.
Free planAPImacOSSelf-hostedWindows6.5Free plan - 18

Whistle
Whistle is a cross-platform proxy for capturing and debugging network traffic.
AndroidiOSWebLinux6.4 - 19
HTTP Debugger
Windows6.3 - 20
FiddlerCore
FiddlerCore is a .NET class library for embedding HTTP and HTTPS traffic capture and modification in .NET applications without the Fiddler user interface.
APILinuxmacOSWindows6.2From $2,999 a year - 21
Mediator
Mediator is a cross-platform desktop GUI proxy for debugging gRPC traffic, available for Linux, macOS and Windows.
Free planLinuxmacOSWindows6.1Free plan - 22
Webber
Webber is a paid debugging proxy for monitoring HTTP and HTTPS traffic between a client and the internet.
LinuxmacOSWindows6.1$19.95 one-time - 23

httpmon
httpmon is a free terminal proxy for inspecting and changing HTTP and HTTPS traffic on Linux and macOS.
Free planLinuxmacOS5.9Free plan - 24
HTTPeep
HTTPeep is a desktop HTTP/HTTPS debugging proxy for developers and QA engineers working on Linux, macOS, or Windows.
LinuxmacOSWindows5.8$59 one-time - 25
Cheolsu Proxy
Cheolsu Proxy is a free, open-source HTTP/HTTPS debugging proxy for capturing, examining, and changing network traffic in real time.
macOS5.4 - 26
Microsoft Dev Proxy
LinuxmacOSWindows4.7

