ReSharper is a Visual Studio extension for .NET developers. It extends Visual Studio with over 1700 on-the-fly code inspections for C#, VB.NET, ASP.NET, JavaScript, TypeScript and other technologies. For most inspections, ReSharper provides quick-fixes (light bulbs) to improve code in one way or another. ReSharper Ultimate includes ReSharper, ReSharper C++, dotCover, dotTrace, and dotMemory all bundled into one license.
If you would like to download ReSharper Ultimate for free, please see the following TigerWare article: JetBrains Student Pricing