OONI Probe

Are you experiencing website and social media app blockages? Is your network unusually slow? OONI Probe can provide you with the answers you need. This powerful app allows you to investigate website and instant messaging app blocks, measure network speed and performance, and identify potential censorship and surveillance systems in your network.

OONI Probe is developed by the Open Observatory of Network Interference (OONI), a free software project under The Tor Project that is dedicated to exposing internet censorship worldwide. Since its establishment in 2012, OONI's global community has collected millions of network measurements from over 200 countries, shining a light on numerous cases of network interference.

Uncover proof of internet censorship

With OONI Probe, you can assess the presence and methods of website and instant messaging app blockages. The data collected through network measurements can serve as compelling evidence of internet censorship.

Identify censorship and surveillance systems

OONI Probe tests are specifically designed to detect systems known as middleboxes that may be responsible for censorship and surveillance activities.

Analyze network speed and performance

By utilizing OONI's implementation of the Network Diagnostic Test (NDT), you can accurately measure the speed and performance of your network. Additionally, the Dynamic Adaptive Streaming over HTTP (DASH) test allows you to evaluate video streaming performance.

Transparent publishing of data

OONI believes in the power of open data, which enables third parties to verify OONI's findings, conduct independent studies, and address other research inquiries. The open publication of OONI data also contributes to greater transparency regarding internet censorship worldwide. You can browse and download OONI data here.

Open source software

All OONI Probe tests, including the NDT and DASH implementations, are based on free and open source software. You can find OONI software projects on GitHub here. To delve into the inner workings of OONI Probe tests, learn more here.

To stay updated with the latest news from the OONI-verse, follow us on Twitter here.