  Mori dream spaces form a large example class of algebraic varieties,
comprising the well known toric varieties. We provide a first software package
for the explicit treatment of Mori dream spaces and demonstrate its use by
presenting basic sample computations. The software package is accompanied by a
Cox ring database which delivers defining data for Cox rings and Mori dream
spaces in a suitable format. As an application of the package, we determine the
common Cox ring for the symplectic resolutions of a certain quotient
singularity investigated by Bellamy/Schedler and Donten-Bury/Wi\'sniewski.
