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Janet vs GNU Guile: catalog facts
Janet	GNU Guile
Free Free and open source under the MIT licence.	Free Free software under the LGPL 3.0 or later.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Entire language under 1MB in one binary Threads, networking and an event loop built in	Works both as a standalone language and an embeddable extension language Broad Scheme standards support, including many SRFIs
Smaller package ecosystem than mainstream scripting languages Lisp-style syntax takes adjustment for newcomers	Scheme syntax is unfamiliar to many programmers Smaller ecosystem than mainstream scripting languages
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: LGPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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