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The OONI testing methodology is openly specified as part of OONI Spec. This includes all the experiments that we run, the backend components used as part of test and the data formats.

The way in which we do these specifications is similar to the RFC (Request For Comments) process.

This makes it possible to have a deep understanding of how OONI tests work, explain the assumption we make in them and make it possible to create independent implementations.

To get an introduction of how we operate from the point of view of OONI Probe, i.e. the software that users can install, please see the specific documentation describing that. New developers would ideally want to be familiar with this document to understand the context.


Nettests (aka experiments)

Are network experiments that deliver some meaningful results to end users. See the nettests directory.

OONI Probe (aka the Probe)

The software that users run to perform nettests. See the probe directory.


Are strategies that we follow for implementing nettests, hypothesis we are interested in testing and implementation details for each target platform. See the techniques directory.

Data formats

Define how data is presented to end users or analysts. See the data-formats directory.


Are core OONI infrastructure components that are necessary to carry out experiments. See the backends directory.


Please, see