Contractor Business Tools, LLC is a development partner for Sage 100 Contractor. We have created a number of interfaces and utilities to Sage 100 Contractor and also provide custom integration services. We have interfaces to T-Sheets, ProCore's timesheets, eCharts and mobile applications. One of our main products is a utility that will create the certified payroll xml file now being required by many States that can be uploaded directly to the State's reporting site.