mitmproxy
Inspect HTTPS traffic interactively with mitmproxy, an open-source proxy tool.
About mitmproxy
mitmproxy is a free and open source interactive HTTPS proxy for intercepting, inspecting, modifying, and replaying web traffic. It handles HTTP/1, HTTP/2, HTTP/3, WebSockets, and other SSL/TLS-protected protocols, and can prettify and decode message types from HTML to Protobuf.
It is available as a command-line tool, as mitmweb for graphical use, and with a Python API and mitmdump for writing addons that modify messages, redirect traffic, or add custom commands. Downloads are listed for Windows, Linux, brew, and Docker Hub.
Key features
- Intercept, inspect, modify, and replay HTTP/1, HTTP/2, and HTTP/3 traffic
- Inspect WebSockets and other SSL/TLS-protected protocols
- Prettify and decode message types from HTML to Protobuf
- Use mitmweb graphical interface for interception and replay
- Script message handling and traffic redirection with Python API
- Replay captured traffic to a client or server later
Best for: Developers and testers who debug, test, measure privacy, or perform penetration testing.
Good for
- Free and open source with public code repository
- Offers command-line tool, web interface, and Python scripting
- Supports HTTP/1, HTTP/2, HTTP/3, WebSockets, and other TLS-protected protocols
mitmproxy at a glance
- Website
- mitmproxy.org
- Category
- Privacy & Security › Security Tools
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux, Web, Windows
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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mitmproxy FAQ
What traffic can mitmproxy intercept and inspect?
HTTP/1, HTTP/2, HTTP/3, WebSockets, and other SSL/TLS-protected protocols, with decoding for types from HTML to Protobuf.
Does mitmproxy have a graphical interface?
Yes, mitmweb provides the main features in a graphical interface, including request interception and replay.
Can mitmproxy be scripted?
Yes, addons can be written with the Python API and mitmdump to modify messages, redirect traffic, and implement custom commands.
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