Implementing Computational Services Based on OpenMath

OpenMath is a standard for representing mathematical objects. This report describes our experiences in implementing a facility for OpenMath-based symbolic computation services to be made available over the Internet. Services can be implemented in REDUCE, Mathematica or Maple, they are accessible via a Java client or using shell scripts. Our experimental client/server system is publicly available under an Open Source license. We address some issues in the development of OpenMath-based services such as implementing Phrasebooks and different choices of input syntax.