Software Alternatives, Accelerators & Startups

C#

Simple, general-purpose, object-oriented programming language for the .NET platform.

Some of the top features or benefits of C# are: Modern Language Features, Large Standard Library, Cross-Platform, Strong Community and Documentation, and Integration with Microsoft Ecosystem. You can visit the info page to learn more.

Best C# Alternatives & Competitors in 2025

The best C# alternatives based on verified products, community votes, reviews and other factors.
Filter: 12 Open-Source Alternatives. Latest update:

  1. 89

    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

    /python-alternatives
  2. 56

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

    Key JavaScript features:

    Wide Browser Support Asynchronous Programming Rich Ecosystem and Libraries Community Support

    /javascript-alternatives
  3. 58

    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

    /java-alternatives
  4. 48

    A safe, concurrent, practical language.

    Key Rust features:

    Memory Safety Performance Concurrency Tooling

    Open Source

    /rust-alternatives
  5. 61

    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)

    /c-plus-plus-alternatives
  6. 42

    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

    /php-alternatives
  7. 54

    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

    /go-programming-language-alternatives
  8. 20

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

    Key NIM features:

    Simple Rules Educational Replayability Minimal Equipment Needed

    /nim-alternatives
  9. 59

    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

    /ruby-alternatives
  10. 16

    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

    /gocd-alternatives
  11. 43

    C is a general-purpose computer programming language.

    Key C (programming language) features:

    Efficiency Portability Rich Library Support Flexibility

    /c-programming-language-alternatives
  12. 52

    Powerful, fast, lightweight, embeddable scripting language.

    Key Lua features:

    Easy to Embed Small Footprint Fast Performance Simplicity

    Open Source

    /lua-alternatives
  13. 36

    An advanced purely-functional programming language.

    Key Haskell features:

    Pure Functional Programming Strong Type System Lazy Evaluation Immutability

    Open Source

    /haskell-alternatives
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