GILDAS is collection of state-of-the-art softwares for (sub-)millimeter radioastronomical applications (either
single-dish or interferometer). It is daily used to reduce all data
acquired with the IRAM 30M telescope and Plateau de Bure Interferometer
(PDBI).
gim2d is a package to do bulge/disk
decompositions of low signal-to-noise images of distant galaxies.