Compare software

brush vs fish: catalog facts
brush	fish
Best for: Bash users curious about a Rust implementation of a familiar shell	Best for: An interactive shell that is pleasant immediately, with nothing to configure
Free Free and open source.	Free Free and open source under the GPL.
Linux, Command line	macOS, Linux, Command line
Bash-compatible syntax, so existing knowledge carries over Written in Rust	Autosuggestions from history appear as you type with no plugins Syntax highlighting shows an invalid command before you run it All 4 strengths for fish Autosuggestions from history appear as you type with no plugins Syntax highlighting shows an invalid command before you run it Tab completions generated from man pages, so they cover real options Works well with no configuration file at all
Compatibility with Bash may not be complete Younger and less widely used than Bash	Not POSIX-compatible, so bash snippets and scripts often need changing No official Windows build All 4 limitations for fish Not POSIX-compatible, so bash snippets and scripts often need changing No official Windows build A smaller plugin ecosystem than zsh Minimum supported macOS version is 10.12
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-2.0
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for brush github.com/reubeno/brush Catalog checked October 2, 2026	Official website Full listing and sources Sources for fish github.com/fish-shell/fish-shell Catalog checked September 21, 2026

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