mitmproxy vs OpenSnitch

mitmproxy is an open‑source, console‑based proxy that lets security researchers and developers intercept, inspect, modify, and replay network traffic. It runs on Windows, macOS, Linux and can be accessed via a web UI for convenient analysis. The tool supports HTTP, HTTPS, and WebSocket protocols, offering powerful scripting capabilities in Python to automate testing and debugging. Being free and self‑hosted, it integrates easily into CI pipelines and local development environments.

OpenSnitch is a GNU/Linux interactive application firewall inspired by Little Snitch. It allows users to intercept and control outgoing network connections, providing a high level of security and control over the system's network activity.

• Free and open‑source with active community support
• Runs on all major operating systems
• Highly extensible via Python scripting
• Rich UI options: console and web

• Highly customizable
• Real-time monitoring
• Interactive interface
• Open source and free

• Steep learning curve for complex scripting
• Command‑line focus may be intimidating for non‑technical users
• Limited built‑in integrations with external tools

• Steep learning curve
• Limited documentation
• Only compatible with Linux