Open-source alternatives to Fable

This project is an open-source 3D game engine designed for building high-fidelity games, simulations, and cinematic environments. It functions as a robotics simulation platform with native integration for ROS 2 to model robot controllers and sensors. The engine features a multi-threaded Forward+ physically based renderer that supports hardware-accelerated ray tracing and global illumination. The system is built on a modular extension architecture using Gems to add or replace features without modifying core binaries. It includes a native SDK for AWS cloud integration, enabling IAM authenticati

Next generation of ClojureCLR under development.

The .NET Compiler Platform is a collection of open-source APIs for C# and Visual Basic that provides deep code analysis, refactoring, and automated source code generation. It serves as the core infrastructure for building development tools, offering a platform to inspect, modify, and understand source code through immutable syntax trees and semantic models. The platform distinguishes itself by providing full-fidelity syntax trees that preserve every character of source code, including whitespace and comments, alongside an incremental compilation pipeline that enables near-instant feedback dur

Please file issues or pull requests here: https://github.com/dotnet/fsharp

Implementation of Python 3.x for .NET Framework that is built on top of the Dynamic Language Runtime.

IronScheme

A polyglot REPL built on .NET Interactive

IL2C - A translator for ECMA-335 CIL/MSIL to C language.

Fez is an early doors experiment in compiling fsharp to BEAM compatible core erlang.

The P programming language.

Harmony is a library for modifying, replacing, and decorating compiled .NET and Mono methods during execution without altering binary files on disk. It functions as a runtime method patching tool, a CIL instruction manipulator, and a reflection extension for C#. The project provides mechanisms to intercept method execution, allowing custom code to run before or after original methods while maintaining the existing program flow. It enables the analysis and rewriting of Common Intermediate Language instructions to change the internal logic of compiled methods. The toolkit also includes utiliti

The new generation Pascal programming language for .NET

PeachPie - the PHP compiler and runtime for .NET and .NET Core

A scripting language for .NET Core

Nemerle language. Main repository.

A tiny, friendly, C# parser construction library

A parser combinator library for F#

A lightweight and fast parsing library for C#.

Please note: this project is not actively maintained anymore. Please look at these alternatives: Fable or WebSharper.

Juniper is a functional reactive programming language currently being developed by Caleb Helbling (currently at Draper Laboratory). Louis Ades was a former developer at Tufts University.

A port of Clojure to the CLR, part of the Clojure project