FeatPost Examples: FeatPost is an extension of the MetaPost language, works in three dimensions and has several features to facilitate the production of physics schemes.
Marc's MetaPost Page: Links to a selection of MetaPost sources.
MetaPost: A powerful graphics language based on Knuth's METAFONT, but with PostScript output and facilities for including typeset text. Public domain.
Metapost: Metapost links, compiled by Luc Devroye.
MetaPost Arrows and Braces: A package for arrows and braces in the computer modern style.
Metapost Examples: Contributed by Denis Roegel.
MetaPost Previewer: Submit MetaPost code on the web page and get the result presented as EPS or PDF instantly.
MPS2EPS: Shell script that converts a given MPS to a self-contained EPS file with the necessary fonts included.
Papers about MetaPost: MetaPost Publications.