CHAPTER 19
Ever since Microsoft provided outside parties the ability to create add-ins, thousands of third-party add-ins have been written and shared among developers. Many of the add-in modules are available for free or little cost. A good starting point is the Microsoft Visual Studio Gallery at http://visualstudiogallery.msdn.microsoft.com/.
Microsoft developers have provided a number of add-ins to the gallery. A few sample add-in programs available include:
It is not unusual to see the functionality of add-in modules developed internally by Microsoft make it into future releases of Visual Studio.
There is a large community of programmers who are writing and sharing their add-ins to the website. Some useful add-ins from the community includes:
The Indent Guides add-in displays vertical lines to show indentation levels. It provides a useful visual guide for aligning statements.

The Routing Assistant add-in enables users to browse, define, match, and filter ASP.NET MVC routes for ASP.NET applications and websites with ease, directly from within Visual Studio. With the popularity of the MVC framework, this add-in module is a great time-saver and way to understand MVC routing behavior.
The devColor add-in underlines the colors in style sheets and includes a color picker dialog.

The Visual Studio Gallery is a worthwhile site to visit and bookmark. You can also contribute your own add-ins if you create one that could be useful to other programmers.
Fame and glory await you!