Use Cases and Deployment Scope
We use ReSharper to provide all of the functionality we wish Visual Studio had! I cannot live without ReSharper's code refactoring, linting, inspection, and testing tools. Yes, Visual Studio has these features, and you will think they are great until you encounter ReSharper and see how these tools really should be.
Alternatives Considered
JetBrains Rider, Microsoft Visual Studio and Microsoft Visual Studio Code
Other Software Used
JetBrains Rider, dotPeek (part of dotUltimate)