Feyn may be used to produce relatively simple Feynman diagrams within equations in a LaTeX document. While the package is good at drawing large diagrams for figures, the present package and its fonts allow diagrams within equations or text, at a matching size.

The fonts are distributed as Metafont source, and macros for their use are also provided.

The author is Norman Gray. The package is Copyright © 1991,2001,2002,2005,2008 Norman Gray.