Drop-in products for Zope provide allow content managers to add new functionality like discussion groups and database access to their site as easily as they new add Documents or Folders. Products designed for Zope register new types of objects which can be dropped into any Folder - even into objects defined by other products!

The Confera product adds the ability to create full-featured web discussion groups to a site. A content manager can simply add a new Confera Topic in any Folder. The newly added Confera Topic is fully functional, complete with generic Documents that can be customized to brand the topic and full-text searching.

The Aqueduct line of products allow content managers to easily integrate back-end data with their site by dropping in Database Connections and Database Methods which perform database queries. The resulting data can then be used in site Documents, taking full advantage of DTML.

One of the main features of Zope's object database is its ability to Undo actions. This is not your typical undo found in text editors, spreadsheets, and other desktop applications. Made a change in some DTML that you didn't like? Wish you hadn't deleted those three images? Realize you uploaded the wrong file object? Clicking on the Undo tag (found on most Zope folderish objects, along with a few others) can help you. Since Zope is based on an object oriented database that stamps times on transactions (changes) to the system, Undo is a robust and solid benefit of this technology.

It also works with sessions. While you can discard changes made in a session instead of saving them, you might do some work in a session and make it public only to find out it's not as good as you thought. Since the session is saved as a single transaction, you can undo a massive amount of changes in one click. Be careful though - there is no redo!