  The discovery of new materials as well as the determination of a vast set of
materials properties for science and technology is a fast growing field of
research, with contributions from many groups worldwide. Materials data from
individual research groups is traditionally disseminated by means of loosely
interconnected, peer-reviewed publications. MatD3 is an open-source, dedicated
database and web application framework designed to store, curate and
disseminate experimental and theoretical materials data generated by individual
research groups or research consortia. A research group can set up its own
instance of MatD3 and publish scientific results or simply use an existing
online MatD3 instance. Disseminating research data in this form enables broader
access, reproducibility, and repurposing of scientific products. MatD3 is a
general purpose database that does not focus on any specific level of theory or
experimental method. Instead, the focus is on storing and making accessible the
data and making it straightforward to curate them.
