Instantly test any C#/F#/VB snippet or program Query databases in LINQ (or SQL) — SQL/Azure, Oracle, SQLite, Postgres & MySQL Enjoy rich output formatting, autocompletion with AI and integrated debugging Script and automate in your favorite .NET language, with all the benefits of a REPL Interoperate with BenchmarkDotNet, xUnit, Rx, MSAL, Excel and more Super lightweight — small and fast, with xcop