The PxD Experiment Registry is an online tool for documenting and tracking PxD's experimental research projects and outcomes. The registry includes experiments where we are deliberately testing something and measuring outcomes from simple A/B tests comparing different versions of a service to large scale impact evaluations and RCTs. The registry does not include general surveys, studies, or pilot projects that did not include an experimental component, for example our Covid-19 surveys. The various fields of the registry can be searched and filtered using set criteria, and the results of these searches are exportable. Please contact firstname.lastname@example.org if you have any questions or publishing queries.