Best Debugging Products in 2026

HTTP proxy / HTTP monitor / Reverse Proxy.

Key Charles Proxy features:

Comprehensive HTTP/HTTPS Debugging User-Friendly Interface Support for Various Platforms Throttling Feature

A centralized log management and SIEM platform built for compliance, auditing, anomaly detection, and infrastructure visibility.

Key BusinessLOG SOC features:

Category Deployment Log Collection SIEM Capabilities

Try for free paid Free Trial €2.7 / Monthly (Per Host)

Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

Key Proxyman.io features:

User-Friendly Interface Cross-Platform Support Real-time Traffic Interception HTTPS Decryption

Open Source $49.0 / Annually

Fiddler is a debugging program for websites.

Key Fiddler features:

Comprehensive Debugging Cross-Platform Compatibility Custom Scripting User-Friendly Interface

From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.

Key Sentry.io features:

Real-time error tracking Detailed error reports Integrations Releases and version tracking

14-in-1 browser extension developers and designers love.

Key SuperDev Pro features:

CSS Inspector Live Text Editor Fonts Changer List All Fonts

freemium $60.0 / One-off

Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.

Key HTTP Toolkit features:

Ease of Use Cross-Platform Compatibility Open Source Comprehensive Debugging Features

Open Source freemium €7.0 / Monthly (for a Pro subscription)

The Collaboration Platform for API Development.

Key Postman features:

User-Friendly Interface Collaboration Comprehensive Testing Tools Extensive API Documentation

Open Source

Instantly generate a free, unique URL and email address to test, inspect, and automate (with a visual workflow editor and scripts) incoming HTTP requests and emails.

Key Webhook.site features:

Ease of Use Real-time Monitoring Customization Temporarily Generated URLs

Open Source freemium $14.0 / Monthly

Behavior-Driven JavaScript.

Key Jasmine features:

Behavior-Driven Development No Dependencies Comprehensive API Built-in Mocking

Open Source

ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.

Key ngrok features:

Ease of Use Security Speed of Setup Flexibility

Open Source

Spectacular Test Runner for JavaScript.

Key Karma features:

Easy Integration Real-time Testing Wide Browser Support Extensible

Open Source

Unleash AI on Your Code Reviews with CodeRabbit.

Key CodeRabbit features:

Efficiency Collaboration User-Friendly Interface Integration Capabilities

Open Source

RequestBin.com gives you a URL that collects requests you send to it so you can inspect them in a...

Key RequestBin features:

Ease of Use Real-time Monitoring No Setup Required Privacy and Security