I have developed mathematical software packages and libraries for three different computer algebra systems, namely AXIOM, ALDOR and Maple. These include low-level routines for fast polynomial arithmetic written in C.
Most of these packages and libraries implement algorithms that I have designed myself or with my students. Currently, my main software projects are the RegularChains library, Basic Polynomial Algebra Subprograms (BPAS), CUda MODular Polynomial (CUMODP) and The Meta_Fork Framework.
Below are links to older software projects.