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

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