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Zsh vs Oils: catalog facts
Zsh	Oils
Best for: Interactive shell with powerful completion, globbing and prompt theming	Best for: Shell script authors who want a stricter bash or a more modern shell language
Free The open-source application is available without a license fee.	Free Free and open source.
macOS, Linux, Command line	macOS, Linux, Command line
Completion system that knows the options of individual commands Recursive globbing and qualifiers that replace many find invocations	OSH runs existing bash scripts with stricter error checking YSH adds structured data and JSON support All 4 strengths for Oils OSH runs existing bash scripts with stricter error checking YSH adds structured data and JSON support Both shells in one small binary Detailed reference documentation
Startup configuration grows complicated quickly, which is why frameworks exist Scripts written for Zsh are not portable to plain POSIX shells	Still before a 1.0 release YSH is a new language to learn
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for Zsh zsh.org Catalog checked September 22, 2026	Official website Full listing and sources Sources for Oils oils.pub Catalog checked September 24, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.