Celebrating 20 Year Partnership with Add-in Express

ComponentSource and Add-in Express have worked together for 20 years to help developers build Microsoft Office extensions.

Celebrating 20 Year Partnership with Add-in Express

ComponentSource is celebrating 20 years of partnership with Add-in Express, a publisher specializing in tools for Microsoft Office development. Its frameworks and components help developers add custom commands, interfaces and application logic to Office applications such as Excel, Word and Outlook. These tools support teams building extensions that bring business functionality into the applications their users already work with.

Add-in Express for Microsoft Office and .net provides Visual Studio project templates, visual designers and components for creating Office COM add-ins, Excel user-defined functions and real-time data servers. Developers can customize ribbons, menus and task panes, while its version-neutral framework supports maintaining a single code base across multiple Office versions. This reduces repetitive interface coding and helps teams manage compatibility when deploying extensions to customers with different Office installations.

Over the past two decades, this partnership has strengthened ComponentSource's portfolio of Microsoft Office development tools, helping developers create custom extensions that bring business functionality into familiar applications. By combining Add-in Express's specialist frameworks and components with ComponentSource's global eCommerce platform, licensing knowledge, and multilingual sales and support services, the collaboration helps customers worldwide discover, evaluate, and purchase the tools they need to extend Microsoft Office applications.

Learn more about Add-in Express.