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Xonsh vs fish: catalog facts
Xonsh	fish
Free Free to use, with optional sponsorship through GitHub Sponsors.	Free Free and open source under the GPL.
Windows, macOS, Linux, Android, Command line	macOS, Linux, Command line
Python code and shell commands mix in one language Access to the full Python library ecosystem from the prompt	Autosuggestions from history appear as you type with no plugins Syntax highlighting shows an invalid command before you run it
Syntax differs from POSIX shells, so existing Bash scripts need changes Most useful to people who already know Python	Not POSIX-compatible, so bash snippets and scripts often need changing No official Windows build
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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