Office Store

Microsoft AppSource is an online store that contains thousands of business applications, add-ins and services.
AppSource has a dedicated catalog for each of the different Office applications.

link - appsource.microsoft.com/en-us/marketplace/apps?page=1&product=excel 

You can access this store from inside every Office application by displaying the Home tab and selecting Add-ins.

Installing an Add-in

To install an add-in, use the search bar and press Add. more details

Removing an Add-in

To remove an add-in, select the "My Add-in" tab, right mouse click and choose Remove. more details

More Information

To find out more about Office Add-ins and how to create one, refer to the [[JavaScript > Office Add-ins]] section.