Comparison with Other Tools

NectoProxy is a free, open-source HTTP/HTTPS debugging proxy. This page compares it against the most popular alternatives to help you choose the right tool for your workflow.

Feature Comparison Table

Feature	NectoProxy	Charles Proxy	Fiddler	mitmproxy
Price	Free (MIT)	$50 (license)	Free (Classic) / Paid (Everywhere)	Free (MIT)
Platform	macOS, Windows, Linux	macOS, Windows, Linux	Windows only (Classic) / All (Everywhere)	macOS, Windows, Linux
UI Type	Web-based (browser)	Native desktop app	Native desktop app	CLI + optional mitmweb
HTTPS Interception	Yes	Yes	Yes	Yes
WebSocket Inspection	Yes	Yes	Yes	Yes
Rules / Rewriting	Yes (8 actions)	Yes	Yes	Yes (Python scripting)
Breakpoints	Yes	Yes	Yes	Yes
Network Throttling	Yes	Yes	Yes	No
HAR Export	Yes	Yes	Yes	Yes
HAR Import	Yes	No	Yes	No
Code Generation	Yes (8 languages)	No	No	No
Request Comparison	Yes	No	No	No
Request Replay	Yes	Yes	Yes	Yes
Security Scanning	Yes	No	No	No
Open Source	Yes	No	No	Yes
Session Management	Yes	Yes	Yes	No
Upstream Proxy	Yes	Yes	Yes	Yes
SSL Passthrough	Yes	Yes	Yes	Yes

Detailed Comparison

NectoProxy vs Charles Proxy

Charles Proxy is one of the most widely used HTTP debugging proxies, popular especially among iOS and Android developers.

Where NectoProxy has the edge:

• Free and open source -- No $50 license fee. No trial limitations.
• Code generation -- Generate equivalent code in 8 languages from any captured request. Charles does not offer this.
• Request comparison -- Diff two requests side by side. Not available in Charles.
• Security scanning -- Built-in security analysis of captured traffic.
• Web-based UI -- Access from any browser on any device. No native app installation required.
• Cross-platform consistency -- Identical experience on all operating systems since the UI runs in the browser.

Where Charles has the edge:

• Maturity -- Charles has been actively developed since 2002 and has a very stable, battle-tested core.
• Native UI -- Some users prefer the responsiveness of a native desktop application.
• AMF / Protocol Buffers -- Charles has built-in viewers for specialized binary formats.

Bottom Line

If you are paying for Charles or looking for a free alternative with modern features like code generation and request comparison, NectoProxy is a strong choice.

NectoProxy vs Fiddler

Fiddler comes in two variants: Fiddler Classic (free, Windows-only) and Fiddler Everywhere (cross-platform, paid subscription).

Where NectoProxy has the edge:

• Truly free and cross-platform -- Fiddler Classic is free but Windows-only. Fiddler Everywhere is cross-platform but requires a paid subscription. NectoProxy is free on all platforms.
• Code generation -- Generate request code in 8 languages.
• Request comparison -- Diff two requests side by side.
• Open source -- Full source code available under MIT license.
• Lightweight -- NectoProxy runs as a Node.js process with a web UI, consuming fewer system resources than Fiddler Everywhere's Electron-based app.

Where Fiddler has the edge:

• Fiddler Classic maturity -- Fiddler Classic on Windows has deep integration with the Windows networking stack and .NET ecosystem.
• FiddlerScript -- Powerful scripting via C#-like scripting language for advanced customization.
• Fiddler Everywhere collaboration -- Team sharing and cloud features for enterprise teams.

NectoProxy vs mitmproxy

mitmproxy is a popular open-source interactive HTTPS proxy favored by security researchers and power users.

Where NectoProxy has the edge:

• Web UI -- NectoProxy's React-based Web UI provides a polished visual experience for inspecting traffic. mitmproxy's mitmweb is more basic.
• Rules engine -- 8 built-in actions configurable through the UI without writing code. mitmproxy requires Python scripting for traffic modification.
• Network throttling -- Built-in bandwidth limiting and network conditioning profiles. mitmproxy does not include this.
• Code generation -- Generate client code from captured requests in 8 languages.
• Request comparison -- Visual side-by-side diffs.
• Security scanning -- Automated security analysis of traffic.
• Session management -- Organize traffic into named sessions through the UI.
• Lower barrier to entry -- No Python knowledge needed. Install via npm and start capturing.

Where mitmproxy has the edge:

• Python scripting -- mitmproxy's addon system allows powerful programmatic control over every aspect of traffic interception using Python.
• CLI power -- The terminal-based mitmproxy interface is extremely efficient for keyboard-driven workflows.
• Transparent proxying -- mitmproxy supports transparent proxy mode and can be deployed as a network gateway.
• Maturity -- mitmproxy has been under active development since 2010.

Bottom Line

If you prefer a visual, browser-based experience with built-in rules and code generation, NectoProxy is the better fit. If you need deep programmatic control via Python scripting or transparent proxy mode, mitmproxy is a strong choice.

Summary

NectoProxy occupies a unique position in the HTTP debugging proxy landscape: it is free, open source, cross-platform, and ships with a modern Web UI and features (code generation, request comparison, security scanning) that are not available in any single competing tool. For most web and mobile development workflows, NectoProxy provides everything you need out of the box.