With Office 2000, Microsoft introduced the Microsoft Office Developers Edition Code Librarian. The Microsoft tool is a good introduction to the concept of code libraries, but can't compare to the feature set of Total Visual SourceBook. Microsoft discontinued this with Office 2003.

Use this side-by-side comparison to see which product is right for you.
 

Feature	Total Visual SourceBook	MOD Code Librarian
Total Lines of Code	Over 85,000	31,000
Code Documentation	Every procedure, module, class, category and topic contains extensive documentation	Minimal
Code Examples	Every module and class has example code showing how to use our code in your applications	None
Integration with Visual Basic	Yes	No
Multi-user code sharing	Supports entire development team	None
Searching Facilities	Search by keyword, category, developer, creation/modification dates, and more	Keyword only
Allows customized error handling	Yes	No
Supports Bookmarks	Yes	No
Supports remote team members	Source Code Exchange allows easy packaging of code, notes and examples, along with developer contact information	No
Supports code synchronization	Source Code Exchange handles the merge/replace/new model for keeping code in sync.	No
Printing of Code	Yes	No
Color coding	Yes	No
Import from other code libraries	Yes	No