Essential Visual Studio 2015 Extensions

My list of usefull Extensions:

WebEssentials 2015
Adds many useful features to Visual Studio for web developers.
FREE by Mats Kristensen
Bundler & Minifier
Adds support for bundling and minifying JavaScript, CSS and HTML files in any project. Has been part of Webessentials before Version 2015
FREE by Mats Kristensen
Web Compiler
The easiest and most powerful way to compile LESS, Scss and CoffeeScript files directly within Visual Studio or through MSBuild.The easiest and most powerful way to compile LESS, Scss and CoffeeScript files directly within Visual Studio or through MSBuild.
Web Analyzer
Provides static analysis directly in Visual Studio for JavaScript, TypeScript, JSX, CSS and more
Image Optimizer
Lossless optimization of JPEG, PNG and Gifs - including animated Gifs
FREE by Mats Kristensen
Glyphfriend
Glyphfriend is a Visual Studio extension to enhance the existing Intellisense to display preview glyphs for many of the common glyph-based font libraries like Font Awesome, Foundation, IonIcons and more.
FREE by Rion Williams
Productivity Power Tools 2015 (now OpenSource)
A set of extensions to Visual Studio 2015 Community (and above) which improves developer productivity.
FREE by Microsoft
Indent Guides
Adds vertical lines at each indent level for all languages
FREE by Steve Dower
PHP Tools for Visual Studio PHP Tools for Visual Studio
Provides full featured support for editing and debugging PHP programs.Provides full featured support for editing and debugging PHP programs.
79$-149$ by Devsense