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: dsleema...