skewspec measures large-scale structure skew-spectra for galaxy surveys. The code reads an input catalog of objects or generates a synthetic density field and computes skew-spectra corresponding to the contributions to the tree-level galaxy bispectrum in redshift space. It can be used as a Python module, taking nbodykit meshes as input and providing a set of standard skew spectra, or run from the command line with configurable options for redshift-space distortions, smoothing scale, grid size, density source, and bias parameters. The software outputs skew spectra to text files and includes example SLURM scripts and Jupyter notebooks for running on clusters and plotting results. skewspec depends on nbodykit (ascl:1904.027) and associated libraries.