The initial release of CUTE a widely used testing environment for optimization software was described by Bongartz, Conn, Gould and Toint in 1995. The latest version, now known as CUTEr, includes reorganisation of the environment to allow simultaneous multi-platform installation, new tools for, and interfaces to,
optimization packages, and a considerably simplified and entirely automated installation procedure for UNIX systems. The SIF decoder, which used to be a part of CUTE, has become a separate tool, easily callable by various packages. It features simple extensions to the SIF test problem format and the generation of files suited to automatic differentiation packages.