Psiphon is circumvention software for Windows and mobile devices that provides access to internet content blocked by censorship.
OONI
OONI measures internet censorship worldwide through community tests with the OONI Probe app.
About OONI
OONI, the Open Observatory of Network Interference, is a global community project that measures internet censorship. It has collected network measurements since 2012, with contributions from people running tests in different countries.
You can install the OONI Probe app for Windows and macOS to test the blocking of websites and apps and to measure the speed and performance of your network. The site also provides access to OONI Data, an open dataset with measurements from more than 200 countries since 2012. You can read research reports on blocking events, testing methodologies, FAQs, and a glossary of terms.
OONI suits researchers, journalists, and anyone who wants to check connectivity or study censorship. You can get involved through community discussions on Slack or IRC, the ooni-talk mailing list, and partnership and ambassador programs. Source code is documented on GitHub, and the team can be contacted by email.
Key features
- Test blocking of websites and apps with OONI Probe
- Measure speed and performance of your network
- Explore open dataset from more than 200 countries
- Read research reports on censorship and blocking events
- Install OONI Probe Desktop App for Windows and macOS
Best for: Researchers, journalists, and internet users who want to check blocking and study censorship measurements benefit most.
Good for
- Open dataset with measurements since 2012
- Covers testing in more than 200 countries
- Provides research, methodologies, and glossary
- Community discussion via Slack, IRC, and mailing list
OONI at a glance
- Website
- ooni.org
- Category
- Privacy & Security › Censorship Circumvention
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- macOS, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
OONI alternatives
Tools and sites you could use instead, ranked by how closely they match.
A nonprofit VPN, Lantern helps users bypass internet censorship. Its site says the service is free to start and accepts donations.
Use I2P, the Invisible Internet Protocol, to connect through a network described as operating without borders.
Protect Android connections from DNS manipulation with Intra, which supports safer access to websites and apps.
Written in Go, SpoofDPI is a proxy tool designed to neutralize Deep Packet Inspection techniques used in internet censorship systems.
Open source
11 alternativesPopular in Censorship Circumvention
Well-known listings from the same topic.
OONI FAQ
What is OONI?
OONI stands for Open Observatory of Network Interference, a global community measuring internet censorship since 2012.
What does OONI Probe do?
OONI Probe tests the blocking of websites and apps and measures the speed and performance of your network.
Where can I view OONI measurement data?
You can use Explore OONI Data on the site, which includes measurements from more than 200 countries since 2012.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.