ZenCompiler delivers a lightweight, high-performance online C# compiler powered by the Mono .NET runtime environment. Compile and execute C# code featuring Language Integrated Query (LINQ), object-oriented programming (classes, interfaces, records, inheritance), generic collections (List<T>, Dictionary<TKey, TValue>), switch statements, pattern matching, and async/await task workflows directly in your browser.
Built for high execution velocity, seamless STDIN interactivity, and zero configuration.
Rich LINQ query comprehension and method syntax (Where, Select, OrderBy, GroupBy)
Generic collections, strongly-typed data structures (Dictionary<TKey, TValue>, List<T>), and nullable reference types
Object-oriented class hierarchies, interfaces, abstract classes, and encapsulation
C# switch statement expressions and modern pattern matching
Interactive Console.ReadLine() STDIN terminal support for user input
Zero-install .NET development on mobile devices, tablets, and desktop workstations
Compiled with mcs / Mono runtime on Linux container nodes with automatic reference to System, System.Core, System.Collections.Generic, and System.Linq.
Practicing C# language fundamentals, experimenting with LINQ data transformations, testing OOP design patterns, enterprise .NET logic prototyping, and preparing for C# technical interviews.
Everything you need to know about compiling and executing C# on ZenCompiler.
Switch to another language sandbox with instantaneous execution.