Yorick is a wonderful language for data and signal processing written by David Munro.
YGSL is a Yorick plug-in to bring some special functions of the GSL (GNU Scientific Library) into Yorick.
YGSL is available at GitHub: https://github.com/emmt/ygsl.
Most of my Yorick plugins are publically available (see HERE). The following ones are not yet freely distributed (but will probably be in a near future if someone shows interest):