keystone provides applications for windows nt/2000/xp/vista/win7 utilizing instantiations va smalltalk, object oriented programming (oop) development environment. products include sophisticated world clock utility capable as any number of time clocks based on any location in the world. assign audio alerts based on any time zone, many visual functions and features. and a rules based mid-office system capable of interfacing between multiple financial service and information providers, including ecn, trading systems, asset management systems, order entry systems, syndication/ipo/issue origination systems and back office systems.