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Oils vs tcsh: catalog facts
Oils	tcsh
Best for: Shell script authors who want a stricter bash or a more modern shell language	Best for: Users and admins who work with csh-style shells and scripts
Free Free and open source.	Free Free and open source.
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	Compatible with the C shell Command-line editing and completion All 3 strengths for tcsh Compatible with the C shell Command-line editing and completion Long-established on Unix systems
Still before a 1.0 release YSH is a new language to learn	csh-style syntax differs from bash and other POSIX shells Smaller plugin and configuration ecosystem than zsh
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: BSD-3-Clause
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for Oils oils.pub Catalog checked September 24, 2026	Official website Full listing and sources Sources for tcsh github.com/tcsh-org/tcsh Catalog checked October 2, 2026

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