From Add-in Express:
With Add-in Express for Office and VCL you can create powerful, fast, and easy deployable plug-ins for all available Microsoft Office versions, including Office 2010, 2007, 2003, 2002 (XP) and Office 2000. Add-in Express is completely based on the Rapid Application Development (RAD) paradigm which allows creating professional application-level Office plug-ins without coding their GUI. Also, Add-in Express provides your add-ins with version-neutrality, i.e. you write add-in code once and have it work transparently across Microsoft Office 2000 through 2010. With visual designers of Add-in Express you can: Add your own or customizing existing toolbars, menus, sub-menus, and pop-ups for Microsoft Office 2000, 2002 (XP), 2003, and 2007. Create new or customizing existing tabs for the Microsoft Office 2010 and 2007 Ribbon UI. Tune the Quick Access Toolbar and the Office Menu for Office 2007. Build the Backstage View for Office 2010. Develop custom task panes for Microsoft Office 2007 and 2010 applications. Customize Microsoft Outlook windows with sub-panes and form regions. Create application-level keyboard shortcuts. Add Outlook option and property pages. Intercept any built-in controls. Program Smart Tag recognizers and their actions. Develop Microsoft Excel RTD servers and their topics. Your extensions developed with Add-in Express will work on all end-user applications from the Microsoft Office family: Outlook, Excel, Word, PowerPoint, Visio, Project, MapPoint, Publisher, Access, FrontPage, and InfoPath. Add-in Express is developed in Delphi and directly supports Delphi 5 - 2010, including the Architect, Enterprise and Professional Delphi editions.