ADD-IN EXPRESS™

Add-in Express™
for Microsoft® Office and .net

All-in-one framework that includes a set of .NET components, visual designers, wizards and solution templates for developing secure, managed, isolated, deployable and version-neutral Microsoft Office extensions: application-level COM add-ins, Outlook plug-ins, Office smart tags, Excel RTD servers, Excel XLL (single and multi-threaded) and UDF (Automation) add-ons. Find more...

Add-in Express™
for Microsoft® Office and Delphi® VCL

True RAD way for developing Microsoft Office extensions, including application-level Office COM add-ins, Outlook plug-ins, Office smart tags, Excel Real-Time Data servers and Excel Automation add-ins (UDF - user-defined worksheet functions). You use project templates, components, visual designers and wizards instead of error-prone routine coding. Find more...

  • New! Support for Office 2021
  • New! Support for Visual Studio 2022
  • Visual Studio 2012 - 2022
  • VB.NET, C#, C++/CLI
  • Microsoft Office 2000 - 2021
  • Msi, ClickOnce, ClickTwice, InstallShield
  • Vdproj & Wix setups generated automatically
  • New! Support for Office 2021
  • New! Support for Delphi 12 Athens
  • New! Windows 11 compatibility
  • Delphi XE2 to Delphi 12 Athens
  • Microsoft Office 2000 - 2021 (x86 and x64)
  • InnoSetup scripts generated automatically

If you're developing Office add-ins, you're simply crazy to do so without Add-in Express

We've been using Add-in Express since 2004. It allows us to concentrate 100% on the features that set our products apart from the competition, rather than the very complicated plumbing that goes into the add-ins themselves. The product pays for itself during every coding session.

Joe Zuffoletto, SmartCompany
Quick start to create your own Office customizations
Get startedAdd-in Express for Office and .NET

Add-in Express for Microsoft Office and .net

Develop plug-ins for all Office versions and applications with a single code base

Add-in Express for Office and .NET is the largest and most complete toolset for developing any types of Microsoft Office extensibility projects. Use visual designers and special components of this toolset to write shared, secure, version-independent and easy deployable Office COM add-ins, smart tags, Excel RTD servers, Excel user-defined functions (UDFs), Excel Automation addins and XLL with little coding.

  • Office versions: Office 2021, 2019, 2016, 2013, 2010, 2007, 2003, XP and 2000
  • Applications: Outlook, Word, Excel, PowerPoint, Access, FrontPage, Publisher, Project, MapPoint, InfoPath, Visio, OneNote
  • IDEs: Visual Studio 2022, 2019, 2017, 2015, 2013, 2012 (VB.NET, C#, C++)

Creating advanced Excel GUI Outlook plug-in development Office Ribbon designer

Add-in Express for Microsoft Office and Delphi VCL

The best platform for developing Microsoft Office extensions

Visual designers and components of Add-in Express in combination with a perfect Delphi compiler provide you with the best platform for Office plugin development. Add-in Express designers make it equally easy to customize Office ribbons, create custom static and contextual ribbon tabs, advanced task panes, extend navigation pane and reading pane, Backstage View, and Quick Access Toolbar.

  • Office versions: Office 2021, 2019, 2016, 2013, 2010, 2007, 2003, XP and 2000
  • Applications: Outlook, Word, Excel, PowerPoint, Access, FrontPage, Publisher, Project, MapPoint, InfoPath, Visio, OneNote
  • IDEs: Delphi XE2 - Delphi 12 Athens

Programming Office add-in Advanced Office task panes Building RTD server

MAPI Store Accessor

Access low-level features provided by Extended MAPI

This free .NET component can assist you with accessing low-level features provided by Extended MAPI in Windows Forms applications and in .NET-based Outlook COM add-ins. Using the MAPI Store Accessor you can subscribe to any or all MAPI notifications in either synchronous or asynchronous mode.

  • Office versions: Office 2000, 2002, 2003, 2007, 2010 32-bit
  • Languages: Visual Basic .NET, C#, C++

MAPI Store Accessor in detail

Have any questions? Ask us right now!