Data produced from RAD-seq and other methods often contains a significant amount of missing data. To help one to understand the causes of missing data and generate a final matrix to be analyzed, I wrote an interactive interface. It allows one to quickly observe the effects of imposing filters on the number of loci for a sample or number of samples for a locus, and whether different blocks of samples share different blocks of genes (pointing out to potential methodological problems).
A simple tool that I wrote to obtain geographical information about localities based on GPS coordinates. I use it after coming back from a field trip to fill out information about specimens to deposit in museums.