Add-in Express .NET, Developer Add-in Express .NET is a tool for developing Microsoft Office COM Add-ins. Using it you can develop a single component that will run across the entire Office suite of applications. It ... Cost: $149 Buy full version       Trial version       Publisher: Afalina Co., Ltd.     Descriptions Add-in Express .NET, Developer: Add-in Express .NET is a tool for developing Microsoft Office COM Add-ins. Using it you can develop a single component that will run across the entire Office suite of applications. It allows you to start writing an add-in in just 15 minutes. www.Add-in-Express.com