Realm Business Solutions has sold NewStar to Toronto-based Quorum Group for an undisclosed amount of cash. NewStar's Homebuilder Enterprise is a full back-office application designed for builders. NewStar will now go to market as NewStar Solutions. The company has more than 300 builder customers. Eric Shishko, the company's president and CEO, says NewStar is committed to the construction industry and that it will have a strong presence at the International Builders' Show in January.