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GNU Guile vs CHICKEN Scheme: catalog facts
GNU Guile	CHICKEN Scheme
Free Free software under the LGPL 3.0 or later.	Free Free and open source under the BSD licence.
macOS, Linux, Command line	Windows, macOS, Linux, Command line
Works both as a standalone language and an embeddable extension language Broad Scheme standards support, including many SRFIs	Compiles Scheme to portable C and native executables Supports R5RS and R7RS plus many extensions
Scheme syntax is unfamiliar to many programmers Smaller ecosystem than mainstream scripting languages	Compiled builds need a working C toolchain Scheme is a niche language with a smaller ecosystem than mainstream languages
Downloadable app	Downloadable app
Open source	Open source
License: LGPL-3.0-or-later	License: BSD-3-Clause
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.