NDepend - NDepend is a Visual Studio tool to manage complex .NET code and achieve high code quality.
Monkey Test It - Primate powered algorithms that scan your site for common bugs and SEO mistakes.
CodeRush - DevExpress CodeRush for Roslyn uses significantly less memory, works faster, and lets you start Visual Studio faster.
Reflect.run - Reflect is automated web testing that anyone can use. It requires no code, and no installation. Record once, run anytime.
Prepack - Prepack is a partial evaluator for JavaScript.
BugBug.io - BugBug makes test automation ultra-simple. It allows you to automate testing without coding, ensuring the quality of your web app or website without repetitive manual testing or writing a line of code.