This document gives brief descriptions for a number of Machine Discovery and Knowledge Based Refinement Systems which have recently been developed. Further, it gives an indication of their application domains. The systems described are: DaViCAND, MedMine, REFINER+, RETAX, STALKER and TIGON. Principal Contact: Professor Derek Sleeman Phone: +44(0)1224 272288 Fax: +44(0)1224 273422 email: dsleeman@csd.abdn.ac.uk www: http://www.csd.abdn.ac.uk/~sleeman /sleeman.html

This document gives brief descriptions for a number of Machine Discovery and Knowledge Based Refinement Systems which have recently been developed. Further, it gives an indication o f their application do mains. The systems described are: DaViCAND, MedMine, REFINER+, RETAX, STALKER and TIGON.