Best C# Alternatives & Competitors in 2025

Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.

Key Python features:

Easy to Learn Versatile Large Standard Library Strong Community Support

Open Source

Lightweight, interpreted, object-oriented language with first-class functions.

Key JavaScript features:

Wide Browser Support Asynchronous Programming Rich Ecosystem and Libraries Community Support

A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible.

Key Java features:

Platform Independence Large Standard Library Robust and Secure Community Support

A safe, concurrent, practical language.

Key Rust features:

Memory Safety Performance Concurrency Tooling

Open Source

Has imperative, object-oriented and generic programming features, while also providing the facilities for low level memory manipulation.

Key C++ features:

Performance Control Object-Oriented Programming (OOP) Standard Template Library (STL)

A popular general-purpose scripting language that is especially suited to web development.

Key PHP features:

Cost-Effective Large Community Cross-Platform Database Support

Open Source

Go, also called golang, is a programming language initially developed at Google in 2007 by Robert...

Key Go Programming Language features:

Simplicity Concurrency Performance Standard Library

Open Source

GB64.COM is the home of The Gamebase Collection of C64 games.

Key NIM features:

Simple Rules Educational Replayability Minimal Equipment Needed

A dynamic, interpreted, open source programming language with a focus on simplicity and productivity.

Key Ruby features:

Ease of Use Rich Libraries Community Support Dynamic Typing

Open Source

Open source continuous delivery tool allows for advanced workflow modeling and dependencies management.

Key GoCD features:

Open Source Pipeline as Code Value Stream Mapping Plugin Ecosystem

Open Source

C is a general-purpose computer programming language.

Key C (programming language) features:

Efficiency Portability Rich Library Support Flexibility

Powerful, fast, lightweight, embeddable scripting language.

Key Lua features:

Easy to Embed Small Footprint Fast Performance Simplicity

Open Source

An advanced purely-functional programming language.

Key Haskell features:

Pure Functional Programming Strong Type System Lazy Evaluation Immutability

Open Source