The extension works fine, but you'll be prompted that it may cause instability. This is incorrect for Indent Guides. (To suppress the warning I either have to drop support for previous versions of VS or completely restructure the project. The warning appears because the extension does not declare VS 2017-specific dependencies, however, all Indent Guides dependencies should always be present.)
(Visual Studio will sometime unselect it after upgrading.)
v15 is now available for VS 2015 and VS 2013! Please file any issues on CodePlex. (21Jun2016)
Displays indent and page width guides in Visual Studio text editor windows.
Guides can be displayed at the indent specified in your settings, regardless of tabs or spaces, or wherever text has been indented to. Page width markers can be displayed at a fixed location and will change color when code extends past them.
There are three styles of guides: solid, dotted and dashed, available in thin and thick varieties and customizable color. The default is dotted grey, as shown in the image. Each indent level can have a different style and color.
Guides can be shown and customized for any language in Visual Studio. The extension understands whitespace characters, not code.