Charles review
A broad desktop proxy toolkit for inspecting, editing, replaying, and routing web traffic.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Charles is a desktop web debugging proxy for developers working with web and networked applications. It records HTTP, HTTPS, and related traffic so users can inspect requests, responses, headers, cookies, and bodies. The product runs on Windows, macOS, and Linux, and it can proxy traffic from browsers, applications, mobile devices, and other clients. Its broad feature set makes it a fit for users who want one general-purpose proxy for investigating and changing network traffic across desktop and connected application workflows.
Its strongest angle is depth across the core debugging workflow. Charles supports request and response editing with breakpoints, traffic replay, rewriting, Map Local and Map Remote routing, SSL proxying and traffic decryption, bandwidth throttling, and WebSocket support. It also includes command-line and headless operation, which extends the product beyond an interactive desktop interface. Request and response inspection covers headers, cookies, and bodies, while HTTP, HTTPS, and SOCKS proxying provide broad protocol coverage. This combination suits developers who need to reproduce traffic, alter requests or responses, mock responses, or inspect encrypted sessions.
Licensing is paid, with a 30-day trial and no separate perpetual free plan. The published license plans show $50 per license for 1-4 User Licenses, $40 per license for 5+ User Licenses, and $30 per license for 10+ User Licenses, with volume pricing at the larger tiers. A 1-4 User License is for one computer at a time; site licensing costs $400 per site, while a Multi-Site License costs $700 per site. Charles is sold as a one-time license for a major version rather than a recurring subscription. Choose it for wide desktop proxy coverage and advanced traffic control; choose an alternative if a free plan is essential.
Charles pros and cons
- Where it wins
- Covers inspection, editing, breakpoints, replay, rewriting, and mapping
- Runs on Windows, macOS, and Linux with CLI and headless operation
- Supports SSL decryption, throttling, WebSockets, and proxy chaining
- Where it doesn't
- No separate perpetual free plan
- Licensing is tied to one computer for individual licenses
- Paid licensing may not suit users seeking a free debugging proxy
Charles fact sheet, pricing and score →
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