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Interactive components for shell scripts: prompts, filterable lists, multi-select, spinners, confirmation dialogs, styled text — each one a command you pipe into a bash script. It turns a script nobody else can run into something with an interface, without rewriting it in Go or Python. From Charm, whose entire catalogue is about making terminals less hostile, and the design quality shows. MIT. The tradeoff is a new dependency for anyone running your script, which matters for anything distributed widely, and heavy use of styling makes scripts harder to read than the plain versions. Best for internal tooling where you control the environment.