Concrete Roman fonts, designed by Donald E. Knuth, originally for use with . Alternative mathematics fonts, based on the concrete ‘parameter set’ are available as the bundle.

LaTeX support is offered by the , and packages.

T1- and TS1-encoded versions of the fonts are available in the bundle, and Adobe Type 1 versions of the ecc fonts are part of the bundle.

The author is Donald E. Knuth. The package is Copyright © 1987-1999 Donald E. Knuth.