Open-source network analysis

5 network analysis whose code is public under an OSI-approved license, rated for privacy with evidence. Picks first, then by score.

1. Sniffnet Grade A

   Desktop application for monitoring network traffic, showing connections, hosts, applications and data usage in real time, with filters, charts and notifications.

   Dual-licensed under MIT or Apache-2.0. Source code

2. OONI Grade B

   Free software and global measurement network that tests websites, apps and networks for censorship, blocking and traffic manipulation, and publishes the results as open data.

   GPL-3.0; the probe engine and the multiplatform apps are both GPL-3.0. Source code

3. GoodbyeDPI Grade B

   Windows utility that circumvents deep packet inspection (DPI) censorship by modifying outgoing packets, blocking passive DPI redirects and working around active DPI blocking.

   Apache-2.0. Source code

4. mitmproxy Grade B

   Interactive HTTPS proxy for intercepting, inspecting, modifying and replaying web traffic, with a console interface, a web interface and a Python scripting API.

   MIT. Source code

5. Wireshark Grade D

   Network protocol analyzer that captures network traffic and lets users inspect packets across hundreds of protocols, live or from saved capture files.

   GPL-2.0-or-later. Source code

Compare all 7 network analysis, open source or not.