Founded in 2012, the Open Observatory of Network Interference (OONI) is a non-profit free software project that aims to empower decentralized efforts in documenting internet censorship around the world.

OONI works on:

• Free software for measuring internet censorship. Through OONI Probe app, you can measure the blocking of websites, instant messaging apps, and circumvention tools, and you can measure network performance. OONI aim's to empower the public to independently detect information controls on the internet.
• Real-time analysis and open publication of censorship measurements from around the world.
• Research reports documenting censorship events around the world.