InvoicingTemplate.com hosts a gallery of free Excel invoice templates that are categorized as Sales, Service, Consulting, and Receipt etc. Each template comes with a UIS version.
ExcelDatePicker.com is built specially for our Excel Date Picker program (Pop-up Excel Calendar), which works with Excel 2003, Excel 2007, Excel 2010 and Excel 2013.
Office-kit.com hosts our product documents also the free trial versions. There are also detailed version history about our billing software and invoicing software since 2004.