I’ve worked on a number of software projects over the years. I won’t claim to any amazing programming competence, but some of these may be of utility to someone and are hosted on GitHub:
pyvista ( Github ) : a Python package for analysis and reduction of astronomical data.
holtztools : some simple useful Python tools for plotting and a few other things
xvista : a software package, written largely in Fortran, for the reduction and analysis of astronomical data developed in the 1980s at the University of California, Santa Cruz. I ported it to Unix system and have been responsible for upkeep and worldwide distribution. There are still a handful of users!
APOsong ( Github ) : software for the Apache Point Observatory SONG node
APOalpyca : custom ASCOM Alpaca drivers for a few components of APO SONG