Official site. Introduction to the language, user manual, package documentation, quick reference, source and binary distribution files, and FAQ.

Useful and important documentation on Yorick and extensions.

Package that provides additional features to Yorick.

Toolkit that adds GUI elements to Yorick.

Language for postprocessing or steering large scientific simulation codes, C syntax; introduction, user manual, package documentation, plugin documentation, quick reference, source and binary distribution files, development, FAQ. [Open Source, BSD-like]

An article on Yorick from Linux Gazette