The system Risa/Asir is a general computer algebra system. It performs arithmetics in various rings and fields, factorization, and Groebner basis computations. It can call outer modules complient to the OpenXM protocols. The asir user language is like C. The most recent source distribution from Kobe University can be found at http://www.asir.org/ Risa/Asir was originally developed at Fujitsu Research Laboratory. Fujitsu Research Laboratory holds the copyright of Risa/Asir. See the COPYRIGHT file in the source distribution. WWW: http://www.asir.org/