Open Source C# Interpreters

DrC# (Dr. C sharp) is an integrated C# development environment that supports interactive evaluation of expressions.

ZLR is a Z-Machine interpreter designed to run modern interactive fiction games.

DDay.iCal is an iCal (RFC 5545) class library for .NET 2.0 and above, Silverlight. It aims at being as RFC 5545 compliant as possible, while targeting compatibility with popular calendaring applications, like Apple iCal, Outlook 2007, etc.

All other C# Ghostscript wrappers that you can find on the internet does not allow you to progressively render PDF page directly to the screen without exporting the page to the disk first. This wrapper does not require exporting to the disk, it can render tiles progressively from the Ghostscript interpreter. Please go to http://ghostscriptnet.codeplex.com/ for development files.

An interactive, Lisp-like language for .Net scripting and development, having deep .Net integration, sharing type system, GC and other runtime services etc., with transparent access to .Net w/o a FFI or wrappers.

NSP is the complete object-based scripting language written in just a few thousand lines of ansi c. It's portable, thread-safe, flexible, embeddable, expandable and easy to understand (as a language and as an API).

Eagle (Extensible Adaptable Generalized Logic Engine) is an implementation of the Tcl scripting language for the Common Language Runtime (CLR).

3DProS is a programming tool. It helps people create 3D animations, design custom 3D controls and solve lots of graphic problems easily, just by drag and drop. Besides a built-in language called MathScript, it also supports Free Pascal and MinGW C++

@-- is a simple interpreter for integrating into your C# application. It may be used for plugins.

The @-- IDE is an IDE for the @-- Programming language. (See http://at-minus-minus.sourceforge.net/. )

AlfaBASIC is not a specific clone of any other BASIC dialect, but is a prototype "BASIC-like" language platform originally written in Java and now ported to C#/.NET. It is experimental! Supports simple file, graphics and sound operations.

Translation File Maker for Bounty Bay Online

BF (Brainfuck) integrated development environment, written in C#. Features syntax highlighting, language interpretation, break points, and ability to view variable (slot) contents.

A C# interactive interpreter. The majority of the actual parsing is done by Mono's mcs, but to the user it looks like a C# interpreter. The project is currently inactive. If anybody want to continue it, please email the current maintainer.

CLearSharp is a clean C#-implementation of Common Lisp. The big goals are ANSI standard compliance, interoperability with Java and integration with scripting environments. This project is meant to be a sibling to CLearJ, with sharing of implementation.

Prolog compiler and interpreter for the .Net 2.0 framework.

An hacky CHIP-8 interpreted coded in c#, with no dependencies other that the windows console. The goal was to understand how a bytecode interpreter works, not a perfect CHIP-8 emulation.

ClearLisp is a Common Lisp interpreter written in C# with a large library including all of .NET and an extensive object model. Supports IIS and XSP or Apache with mono. Includes sample code of a personal, file based wiki web application.

Compose* is a project that aims at enhancing the modularization capabilities of component- and object-based programming. In particular, Compose* offers aspect-oriented programming through the composition filters model.

The Data Abstraction Penalty benchmark for Small Objects in Java and C#, version 2.

DataLoggin provides the raw data Database for the Dawn of Light Server Emulation Project. (www.dolserver.com)

Dyalect is a dynamic programming language for .NET Core platform. It is lightweight, fast and modern. Dyalect (or Dy for short) is written in C# and has zero dependencies except for standard .NET Core libraries, which means that it can seamlessly run on Windows, MacOS and Linux. Moreover you can use the same binaries on any of these platforms! Dy runs on the top of its own high performance virtual machine. It compiles fast and can be used as an embeddable language or as a scripting language of your choice. It is also a good language to learn programming. Dyalect offers modern syntax, inspired by such languages as C#, Swift, Go and Rust, first class functions, coroutines, expressive modules, a dynamic type system with an ability to extend existing types with new functions and much more. Dy is shipped with a crossplatform interactive console. Main repo: https://github.com/vorov2/dyalect

Initially a simple C# EBNF file parser that construct the expression tree.

A toy programming language that supports english and italian keywords. It's goal is to be a language for algorithm prototyping, simple enough to be teached to kids.

Ela is a modern functional programming language that runs on CLR and Mono. It is implemented in 100% .NET and C#. Main project hosting is CodePlex: https://ela.codeplex.com/