RateIt is a GUI tool for performing subjective testing of audio samples based on the MUltiple Stimuli with Hidden Reference and Anchor (MUSHRA) methodology as specified in ITU-R recommendation BS.1534-1. RateIt is dual-licensed under the General Public License (GPL) and the Mozilla Public License (MPL) version 1.1.
RateIt is written in C using libglade, which means that the user interface is very easy to customise. It currently uses sox for playback but support for libsndfile is planned (patches welcome).