Butterfish Shell records 34 monthly visits with -97.5% month-over-month growth and Free, Open Source (bring your own API key) pricing. HeyCLI records 814 monthly visits with -29.7% growth and Free pricing.
A bash and zsh shell with LLM prompting built in
Turn plain English into ready-to-run Linux commands at the prompt
| Dimension / Metric | | |
|---|---|---|
| Official Domain | butterfi.sh | heycli.com |
| Pricing Model | Free, Open Source (bring your own API key) | Free |
| Monthly Visits | 34 (34) | 814 (814) |
| MoM Traffic Delta | -1.33K (-97.5%) | -344 (-29.7%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (72.1%) |
| Direct Visits / mo | 14 | 324 |
| User Rating | 4.4 | 4.1 |
| Supported Platforms | Website | Website |
A bash and zsh shell with LLM prompting built in
Start any line with a capital letter to send it to the AI as a prompt, while normal lowercase commands behave exactly as before.
The model receives your recent commands and their output, so follow-up questions like 'why did that fail?' get grounded answers.
Copilot-style command suggestions appear in the shell and can be applied with Tab, informed by your recent history.
Trigger an autonomous loop with ! to have the model propose commands toward a goal, or !! to let it run them without confirmation.
Turn plain English into ready-to-run Linux commands at the prompt
Describe what you want to accomplish in ordinary English and receive a Linux command that matches the intent.
The helper works from the command line itself, so you avoid context switching to a browser or documentation site.
A simple keyword prefix lets you call the assistant only when you need it, keeping normal shell usage unchanged.
Setup instructions are distributed through the project's GitHub repository, and the site collects email addresses for release news.
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