Open Source Scheme Compilers

Schism is an experimental compiler that translates Scheme programs into WebAssembly, allowing Scheme code to execute in both browser environments and server platforms like Node.js. Developed initially by Google researchers, the project was designed to explore the intersection of functional programming and WebAssembly’s low-level efficiency. Schism supports a subset of the R6RS Scheme standard and is self-hosting, meaning that the compiler itself is written in and compiled by Schism. Its architecture demonstrates advanced compiler design techniques such as staged compilation and snapshot-based bootstrapping. The project focuses on leveraging WebAssembly’s experimental capabilities, including reference types and tail calls, to test the limits of language portability and runtime performance. Though no longer actively maintained, Schism remains a valuable example of how high-level languages can be mapped to WebAssembly and offers insights into language implementation.

In this project we aim to develop scheme libraries for developing various web applications (especially servlets and xml-based web services). Our approach is to use jscheme (an open source implementation of scheme in Java) as the core language which allow

Yes, Scheme really is a portable language. S2 proves it. S2 compiles various dialects to R5RS, and can bootstrap under four different dialects

The MDK provides a simulator of D. Knuth's MIX computer, and a development environment to write, run and debug MIXAL programs on it.

This is a resurrection of Matthias Blume's VSCM Scheme implementation.

A Windows native distribution of Bigloo, a Scheme system that includes an optimizing compiler generating C code, Java classes and .NET CIL files as well as an interpreter.

Metaprogramming: proof of the concept.

Eleven is a programming language for creating robust, scalable web applications. It offers a 20x programmer productivity increase over ASP, JSP, etc. by automating state management and UI layout. The compiler generates ready-to-run PHP or mod_perl code.

Here we have fun developing software related to embedded extension languages and small languages in many application domains, using existing languages and/or creating new ones.

This is a JavaScript to Scheme translator written entirely in Scheme. Currently tested only with Guile

Kawa is a full Scheme implementation. It implements almost all of R5RS (for exceptions see Restrictions), plus some extensions.

LIME (Less-is-More) is parallel/concurrent programming environment based on C. Internally, it uses XML technology to describe tasks and their dependencies. Externally, it offers the ANSI C99 programming as well as a set of visually-oriented interfaces.

The intention of this independent research project is to develop a simple programming language that has rather powerful metaprogramming capabilities.

An optimising compiler for the R5RS Scheme language, written in R5RS Scheme, compiling to ANSI C, supporting Unix-like platforms, performing whole-program analysis and online partial evaluation.

A framework for generation of real-time numerical simulations of dynamical systems from differential and difference equations.

Ocean Scheme is an implementation of the Scheme programming language (aiming to be compatible with the upcoming R6RS Standard), whose native platform is the .NET framework (Mono, MS, and DotGNU). Written ground-up in C#.

OxyScheme is a compiler for a programming language Scheme intended for use on .NET framework

PLT Spy is a Python to Scheme translator.

This project is dedicated to developing more readable format(s) for Lisp-based languages (such as Common Lisp and Scheme) and implementing those formats (readers, pretty-printers, editor macros, etc.). MIT license preferred, to spread them widely.

Redtail is a scripting engine library and script language. The Redtail library provides the ability to execute Scheme-like Redtail scripts from within an application, increasing flexibility.

STklos is an efficient Scheme System providing a powerful Object System

A set of Eclipse plugins for the Scheme programming language. Features a powerful, fully extensible S-expression-based editor. Integrates seamlessly with any Scheme interpreter.

An ongoing project in language and compiler design.

A portable and retargetable lexer/parser generator.

Try Scheme is a Scheme interpreter that runs in your web browser. No installation. Just click and go. Full support for continuations and syntax-rules macros!