The tools on this site were created by Tim Wilson, competitive target archer, JOAD coach at Rapids Archery JOAD and current president of the Minnesota Archers Alliance.
Most everything is a combination of PHP, Javascript (including the DataTables library), PostgreSQL, R, Shiny, and some Python thrown in for data processing.
For questions about any of the tools hosted here (or linked to from here), contact Tim at tim@timwilson.info.