The growpacity module is a toolkit that uses OpTool to compute dust opacities for a given dust composition as a function of the dust size distribution and temperature. It comes with a Python interface that you can use to set up your opacity model and generate opacity tables. It is designed to be easily integrated into hydrodynamical codes, and includes interpolation routines in Python and C to read and interpolate the generated opacity tables.
It is implemented in Python and is available on GitHub. The documentation can be found here. The module was developed in collaboration with Til Birnstiel (University of Munich).