Add-in Express Ltd. is a privately held software development company located in Belarus (Eastern Europe). Established in 1998, Add-in Express Ltd. is the pioneer of tools and solutions based on Microsoft Office. The companys primary product focus is on enhancing the capabilities of Microsoft Office appliactions. They offer development tools on .NET, VSTO and VCL platforms to programmers who integrate and embed their applied code into applications from the Microsoft Office Suite. They also provide custom software development and support services.