VSdocman - a .NET documentation compiler - is directly integrated in Visual Studio so it will assist you with complete process of creating a documentation. This includes intelligent semi-automatic commenting of your code elements, creating additional topics (non-API reference) and generating and deploying the documentation.

GhostDoc is a Visual Studio extension that automatically generates XML documentation comments for methods and properties based on their type, parameters, name, and other contextual information. When generating documentation for class derived from a base class or for interface implementation (e.g. .NET Framework or your custom framework), GhostDoc will use the documentation that Microsoft or the framework vendor has already written for the base class or interface.

VSdocman is an ultimate, fast and easy to use .NET documenting tool for every Visual Studio C# and VB developer.

Document your .NET code on a professional level.
Generate comprehensive MSDN-style class documentation for your C# and Visual Basic .NET projects, with custom topics, IntelliSense and F1 context sensitive help.
See how easy the code commenting with XML doc comments can be with powerful comment templates and sophisticated WYSIWYG comment editor.

Understand is a static analysis tool for maintaining, measuring, & analyzing critical or large code bases. From metrics and graphs to dependency analysis, Master your source code with Understand. Basic Metrics.

VSdocman is an ultimate, fast and easy to use .NET documenting tool for every Visual Studio C# and VB developer.

Document your .NET code on a professional level.
Generate comprehensive MSDN-style class documentation for your C# and Visual Basic .NET projects, with custom topics, IntelliSense and F1 context sensitive help.
See how easy the code commenting with XML doc comments can be with powerful comment templates and sophisticated WYSIWYG comment editor.

Includes syntax highlighting, code builders and sidekicks, clickable method and function navigators, code completion, tag completion, function lookup, powerful regular expression enabled search tools, bracket and tag matching, CSS, XML, and HTML validators, a CSS style builder, an HTML tag builder, HTML Tidy, a powerful file system browser, bookmarks, file compare, key ahead, color chooser, and much more.

VSdocman is an ultimate, fast and easy to use .NET documenting tool for every Visual Studio C# and VB developer.

Document your .NET code on a professional level.
Generate comprehensive MSDN-style class documentation for your C# and Visual Basic .NET projects, with custom topics, IntelliSense and F1 context sensitive help.
See how easy the code commenting with XML doc comments can be with powerful comment templates and sophisticated WYSIWYG comment editor.

Tabs Studio is a Visual Studio add-in empowering you to work comfortably with any number of open documents. Make all tabs visible in multiple rows or limit maximum number of rows and hide rarely used tabs to save screen space. Remove path from tab name and add folder or project name only when two opened tabs have the same name. Automatically group tabs with the same name but different extensions on one extended tab. Save screen space and keep relevant tabs close to each other.

Tabs Studio v3.5.0 - February 8, 2015
Added support for Visual Studio 2015. Read more...
Added the ability to customize comment placement in the tab title with the SQLComment add-in.
Added the ability to manually set the tab comment with the SQLComment add-in.
Enabled the SQLComment add-in by default in SSMS 2012/2014.
Added the ability to customize extensions priority in the OrderEx add-in.
Created the CloseClick add-in to close a tab by double-click.
Fixed KeyNotFoundException in Sorter when opening a priority disambiguated tab.
Fixed a rare ObjectDisposedException for MarshalingWindowFrame when opening Tabs Studio options.

Fixed a rare “This Visual is not connected to a PresentationSource” exception.
Fixed a rare ObjectDisposedException in the on_window_moved handler.

Typing a member access operator (for example, '.' in Java' or "->" in C++) displays a list of the members for the corresponding object or symbol. To access this feature on demand, press Alt+Dot.

Show Comments - Comments are displayed in a mini HTML window which supports rendering Javadoc, Doxygen, and XMLdoc comments. When a symbol has multiple definitions or overloads, and multiple sets of comments, the comments will indicate that you are looking at item "". Click on the arrows or use Ctrl+PgUp and Ctrl+PgDn to cycle through the comment sets.
Completion on Space - Pressing the spacebar when List Members is displayed will insert the longest unique matching prefix from the symbols in the list. For example, if the list contains FLAG_CHAR and FLAG_LONG, then typing FL completes the line of code up to FLAG_.