HTTP, HTTP2, HTTPS, Websocket debugging proxy

Requestly was built to save developers time by intercepting and modifying HTTP Requests. It has now developed into an open-source alternative to Charles Proxy and Telerik Fiddler that works directly in browsers without VPN and proxy Issues. It is used by more than 200,000+ front-end developers and 11,000+ companies worldwide.

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自定义的Fiddler规则，多环境切换、解决跨域开发、快速调试线上代码必备|高效调试分析利器

Sunny网络中间件

Enjoy playing on your PS4 from your computer (WLAN/Ad-hoc) without the need of an Internet connection.

A tool that make your apk debuggable for Charles/Fiddler in Android 7.0

Want Fiddler Everywhere Enterprise for Free? Then Patch it! Patch every version Automatically!

Inspect and modify WCF Binary Messages in Fiddler

Sample applications demonstrating usages of Progress® Telerik® FiddlerCore Embedded Engine.

TangGo测试平台是无糖信息技术有限公司集多年渗透测试实战经验设计和开发的国产化综合性测试平台，为软件测试、网络安全从业人员提供强大且易用的测试工具及多人协同的工作环境，主要用于Web站点的功能测试、安全测试和安全评估。

A Fiddler extension for decoding Google Protocol-buffers Data

JMeter脚本录制工具：将Fiddler/Charles转换为JMeter 4.0以上的脚本，并支持过滤功能 JMeter script recording tool: converts Fiddler / Charles into scripts above JMeter 4.0, and supports filtering function

Java版本的mitmproxy，对本地浏览器所有的Http(s)请求和响应进行拦截并「重制」；也可充当轻量级B/S版抓包软件；

Fiddler Plug，Provide Host Mapping、File Mapping、Header Replace、Https to Http、ServerIP、Disable Cache、vConsole、Console Log、JS Inject

Fiddler插件开发笔记

A simple SOCKS v4a proxy server written in C# (.NET Standard 2.0) which forwards all traffic to a SOCKS v5 server.

A Fiddler extension to export sessions in a format Postman can import

Just keyauth server emulator made in python

MsgPack implementation with additional debugging and validation tool including Fiddler plugin / msgpack.org[C#]