Free and open first

Best Web Debugging Proxies in 2026

During development or testing, a web debugging proxy can help you inspect traffic moving between an application and a server. Compared on breakpoint rules, request and response editing, and WebSocket inspection, these tools also specify details such as response mocking, traffic replay and proxy chaining. HTTP Toolkit, Fluxzy and Reqable are among the named options. Check platforms for compatibility with your setup, and weigh free-plan availability and paid-from pricing. Consider the kinds of traffic you need to inspect, modify or replay, then compare the listed controls that are relevant to that work.

27 apps
Research read 23 Sept 2026
How the order is worked out

1

Fluxzy

Free plan Open source AndroidAPIiPhone+4

Fluxzy offers extensive traffic inspection and modification, including proxyless capture and exports in several formats.

9.2 Free plan · paid from €49 Visit site
2

mitmproxy

Free plan Open source APILinuxMac+3

mitmproxy provides multiple interfaces and proxy modes for inspecting, editing, recording, and replaying traffic.

9.0 Free plan Visit site
3

NetworkSpy

Free plan Open source AndroidAPIiPhone+4

NetworkSpy combines traffic inspection and editing with replay, breakpoints, protocol-specific inspection, and custom viewers.

8.9 Free plan · paid from $18/user/yr Visit site
4

HTTP Toolkit

Free plan AndroidiPhoneLinux+3

HTTP Toolkit offers a free starting point for traffic inspection and manual breakpoints, with automation and reusable rules in Professional.

7.5 Free plan Visit site
5

HTTPeep

Free plan LinuxMacWindows

HTTPeep combines desktop traffic inspection with rule management, replay and a command-line tool. It offers a free plan and 7-day trial, while Professional is listed as a one-time purchase.

7.4 Free plan · paid from $49 · 7-day trial Visit site
6

Mediator

Free plan LinuxMacWindows

Mediator provides a free desktop proxy with schema-based gRPC message decoding and request redirection.

7.3 Open source Visit site
7

Moni Proxy

Free plan AndroidiPhoneLinux+2

Moni Proxy combines device traffic inspection with request editing, replay, and mocking tools.

7.3 Free plan · paid from $71 Visit site
8

Probe

Free plan AndroidAPIiPhone+2

Probe combines traffic inspection, API requests, mocking, and visual automation in a local tool.

7.3 Visit site
9

httpmon

Free plan LinuxMac

Choose httpmon if you need a free terminal proxy for inspecting and changing HTTP or HTTPS traffic on macOS or Linux.

7.2 Free plan Visit site
10

Proxyfor

Free plan LinuxMacSelf-hosted+2

Choose Proxyfor if you need an open-source proxy for inspecting HTTP(S) and WebSocket traffic, with terminal and web interfaces and several export formats.

7.2 Open source Visit site
11

Proxyman

Free plan AndroidAPIiPhone+3

Choose Proxyman if you need a proxy for inspecting and changing HTTP(S) traffic, with desktop and mobile apps and tools for WebSocket and GraphQL debugging.

7.1 From $89 · 14-day trial Visit site
12

Reqable

Free plan AndroidAPIiPhone+4

Reqable combines traffic analysis with API testing, editing, and collection import options across desktop and mobile platforms.

7.1 Free plan · paid from $49.90/yr Visit site
13

ProxyHawk

Free plan AndroidiPhoneMac

ProxyHawk combines local traffic inspection with request tools and API response monitoring.

7.0 Free plan · paid from ₹417/mo Visit site
14

Sniper

Free plan APIMacSelf-hosted+1

Sniper brings traffic capture, replay, scanning, and scripting together in a free desktop proxy. Consider the platform and unsigned-release limitations before installing or exposing its remote UI.

7.0 Open source Visit site
15

Tucano Proxy

Free plan APIExtensionLinux+4

Tucano Proxy combines traffic inspection, replay, and export tools across several interfaces. Its interception limits and Linux prebuilt targets are worth checking before adopting it.

7.0 Open source Visit site
16

Rockxy

Free plan iPhoneMac

Rockxy combines traffic inspection and request editing with a free tier and several paid plans. Check the Mac version requirement and plan limits; mobile capture currently involves manual setup.

6.8 Free plan · paid from $79 Visit site
17

Charles

Free trial iPhoneLinuxMac+1

Charles offers detailed traffic inspection alongside request editing, replay, and network simulation.

6.6 From $30/user · 30-day trial Visit site
18

WePROXA

Free plan MacWindows

WePROXA provides traffic inspection, editing, replay, and WebSocket tools for desktop debugging.

6.6 Free plan · paid from $25 Visit site
19

FiddlerCore

Free trial APILinuxMac+1

FiddlerCore provides embedded traffic control for .NET software, covering capture, editing, replay, mocking, and monitoring scenarios.

6.5 From $2,999/yr · 30-day trial Visit site
20

Fiddler Everywhere

Free trial AndroidiPhoneLinux+2

Fiddler Everywhere combines traffic inspection and editing tools with integrations for coding assistants. The 10-day trial offers a way to evaluate it, but ongoing use requires a paid plan.

6.5 From $7/user/mo (annual) · 10-day trial Visit site
21

ProxyBoy

Free plan Windows

Pick ProxyBoy if you need a free Windows tool for debugging HTTP traffic and want built-in traffic rules, editing, or optional AI analysis.

6.5 Free plan Visit site
22

Microsoft Dev Proxy

Free plan LinuxMacWindows

6.1 Free plan Visit site
23

HTTP Debugger

Free trial Windows

HTTP Debugger combines broad protocol capture with detailed inspection, traffic modification, replay, and MCP analysis.

6.0 From $129 · 7-day trial Visit site
24

Requestly

Free trial LinuxMacWindows

Requestly combines broad protocol support, testing, documentation, and collaboration across desktop and web.

5.8 From $10/user/mo (annual) · 30-day trial Visit site
25

Webber

Free trial LinuxMacWindows

Webber combines proxy recording, request inspection, network simulation and HAR export in a cross-platform desktop tool.

5.7 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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