Measure internet censorship. Contribute to the largest open dataset

Hacker News Top 09/19/26, 08:00 PM Tools

Summary

OONI Probe is a tool that enables users to measure internet censorship and contribute to the largest open dataset on the topic, aiding in the detection of blocked websites, network performance assessment, and testing of app blocking.

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# Install OONI Probe Source: [https://ooni.org/install](https://ooni.org/install) ![](https://ooni.org/install/index.svg) ## Measure internet censorship Contribute to the world's largest open dataset on internet censorship ![OONI Probe mobile app screenshot](https://ooni.org/install/PhoneMockupIcon.png) ![](https://ooni.org/install/BG-Flourish.png) ## Download OONI Probe ### Command line Linux & macOS ## What OONI Probe measures ![](https://ooni.org/install/web.png) ### Discover which websites are blocked Run OONI Probe to check which websites are blocked in your country\. ![](https://ooni.org/install/performance.png) ### Learn how fast your network is Measure the speed and performance of your network with the NDT test, developed in collaboration with[M\-Lab](https://www.measurementlab.net/)\. ![](https://ooni.org/install/messaging.png) ### Check which apps are blocked Test WhatsApp, Facebook Messenger, and Telegram to check if they are blocked\. Run OONI Probe to check if circumvention tools work on your network\. ![OONI Explorer](https://ooni.org/install/explorer-browser.png)

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