Open Observatory of Network Interference

The Open Observatory of Network Interference (OONI) is a non-profit research and open-source software publisher that builds tools for documenting and analyzing internet censorship, traffic manipulation, and other network anomalies worldwide. Operating under the umbrella of the Tor Project, OONI focuses on transparency and reproducibility, publishing measurement methodologies, raw datasets, and analysis code alongside its software. Its flagship product, OONI Probe, is a cross-platform application that runs automated or on-demand tests to detect blocking of websites, instant-messaging apps, and censorship-circumvention tools, as well as to identify the presence of middleboxes, speed throttling, or DNS tampering. The utility is widely used by journalists, digital-rights researchers, and civil-society organizations to gather evidence of network interference that can inform policy reports, legal challenges, or public-awareness campaigns. Because tests are crowdsourced from volunteers in more than 200 countries, aggregated results provide a near-real-time global map of connectivity restrictions, accessible through OONI Explorer. All code is released under permissive licenses, encouraging community contributions and third-party audits that strengthen measurement accuracy and user privacy. OONI Probe is available for free on get.nero.com, where it is delivered through trusted Windows package sources such as winget, always installs the newest release, and can be included in batch installations alongside other applications.