The term "open methodology" includes procedural, technical and technological solutions intended for use in scientific research, which are openly available to the scientific community. These solutions can be available in their final form, but are usually open to further development, which implies that each member of the scientific community can contribute to their improvement. The key feature of open methodologies is their transparency, that is, their direct applicability by the end user.
At this point, probably the best illustration of open methodologies are different software solutions, such as the statistical software environment R or software solutions such as statistical packages JASP or jamovi. In psychology and related scientific disciplines, a special repository of openly accessible IPIP questionnaires (International Personality Item Pool), is of special importance. Within the Psychometric Center in Cambridge, the Concerto platform was developed for online computer adaptive testing.