Compare software

fish vs brush: catalog facts
fish	brush
Best for: An interactive shell that is pleasant immediately, with nothing to configure	Best for: Bash users curious about a Rust implementation of a familiar shell
Free Free and open source under the GPL.	Free Free and open source.
macOS, Linux, Command line	Linux, Command line
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	Bash-compatible syntax, so existing knowledge carries over Written in Rust
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	Compatibility with Bash may not be complete Younger and less widely used than Bash
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: MIT
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for fish github.com/fish-shell/fish-shell Catalog checked September 21, 2026	Official website Full listing and sources Sources for brush github.com/reubeno/brush Catalog checked October 2, 2026

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