It was formerly jey-Toolkit. Now it's renamed and also being distributed by Cycling '74. Through the Files menu that appears above, the same package as released at the Package Manager of Max 7/8 and the beta-version update(s) are accessible. PLEASE NOTE that, on Max 6.1.10, some Jitter features and GEN~ objects that the patches included in the package use WON'T be working.
The name of our package ACToolkit is a derivative of AC Toolbox, the legendary "Algorithmic music composition program for macOS" of Mr Paul Berg's (https://www.actoolbox.net). Our Max-external-objects feature the real-time realisation of discrete-continuous Probability Distribution Functions, the PDFs derived from sets of interpolated discrete-probability-densities, on random numbers. Also, the package includes numerous examples exemplifying the methodologies on the usage of PDF-shaping in Algorithmic Composition, especially ones involving signal processing techniques.