Welcome to Scheme.org, a new home page for Scheme. We host a snapshot of the old Schemers.org. Thanks to Prof. Shriram Krishnamurthi and all the other people who gave Scheme a home on Schemers.org for nearly twenty-five years.
Scheme is a classic programming language in the Lisp family. It emphasizes functional programming and domain-specific languages but adapts to other styles. Known for its clean and minimalist design, Scheme is one of the longest-lived and best-studied dynamic languages, and has many fast and portable implementations.
From the Scheme standard reports:
Programming languages should be designed not by piling feature on top of feature, but by removing the weaknesses and restrictions that make additional features appear necessary. Scheme demonstrates that a very small number of rules for forming expressions, with no restrictions on how they are composed, suffice to form a practical and efficient programming language that is flexible enough to support most of the major programming paradigms in use today.
More on Planet Scheme.
| Try Scheme | Type Scheme code and run it in your browser |
|---|---|
| FAQ | Frequently asked questions about Scheme |
| Cookbook | Code snippets that solve common problems |
| Standards | Revisedn Report on Scheme and other standards |
| SRFI | Scheme Requests for Implementation |
| Research | Dive into the academic research behind Scheme |
| Community | Scheme gathering spots around the internet |
|---|---|
| Events | Scheme Workshop, conferences, and other meetups |
| Planet | Blog posts from every corner of the Scheme community |
| Video | Videos about Scheme |
| Chat | IRC, Discord, Gitter and other highly informal channels |
| Lists | Mailing lists for email discussion of many Scheme topics |
| Wiki | Scheme community wiki |
| Groups | Work groups |
| Get Scheme | Browse and compare all known Scheme systems | |
|---|---|---|
| Bigloo | Fast Scheme-to-C and Scheme-to-JVM compiler | R5 |
| Chez Scheme | Cross-module optimizing native-code compiler | R6 |
| Chibi-Scheme | Small embeddable interpreter with many optional libraries | R7 |
| CHICKEN | Scheme-to-C compiler with a big, friendly community | R5 R7 |
| Cyclone | New Scheme-to-C compiler with native threads | R7 |
| Gambit | Fast, concurrent, retargetable optimizing compiler | R5 R7 |
| Gauche | Fast script interpreter with many built-in libraries | R5 R7 |
| Gerbil | Scheme with actors and objects built on Gambit | R5 R7 |
| Guile | Main Scheme implementation of the GNU project | R6 R7 |
| JazzScheme | Object-oriented GUI and IDE built on Gambit | R5 |
| Kawa | JVM compiler with many extensions to Scheme | R7 |
| Loko | Bare-metal native-code compiler | R6 R7 |
| MIT/GNU Scheme | Native-code compiler and development environment | R5 R7 |
| Mosh | Fast and complete R6RS interpreter | R6 R7 |
| Racket | Native-code compiler | R5 R6 R7 |
| s7 | Embeddable interpreter for music applications | R7 |
| Sagittarius | Script interpreter with many built-in libraries | R6 R7 |
| SCM | Portable C implementation that begat Guile and SLIB | R5 |
| STklos | Interpreter with CLOS object-oriented GUI | R7 |
| Ypsilon | Incremental native-code compiler with concurrent GC | R6 R7 |
| Index | Library search using types, tags, and names | |
|---|---|---|
| Containers | Ready-to-run Docker containers | |
| Documentation | Study Scheme implementations and libraries | |
| Manual pages | Unix manual pages for tools and libraries | |
| Conservatory | Preservation of old software and websites | |
| Files | Archive of current and historical files | |
| Gitea | Host Git repositories under Scheme.org | |
| Go Scheme | URL shortening service | |
| Registry | Catalog of identifiers and other data |