Butterfish logo
coding

Butterfish

AI copilot for your terminal that provides shell command suggestions, code explanations, and contextual help using GPT-4. Open-source CLI tool that works with bash, zsh, and fish shells.
command line ai terminal assistant gpt-4
Advanced Level
Free (Open Source)
Starting Price
Try Butterfish
Category
coding
Setup Time
< 2 minutes
coding
Category
Advanced
Difficulty
Active
Status
Web App
Type

What is Butterfish?

ChatGPT in your terminal

Butterfish brings the power of GPT-4 directly to your command line, acting as an intelligent copilot for terminal operations. Ask questions about shell commands, get code explanations, generate scripts, and receive contextual help—all without leaving your terminal. The tool understands your shell history and current directory context to provide relevant suggestions. Features include command autocomplete with AI explanations, summarization of command outputs, code generation for quick scripts, and conversational debugging. Works seamlessly with bash, zsh, and fish shells. As an open-source project, developers can customize and extend functionality. Perfect for learning new commands, debugging issues, and accelerating terminal-based workflows.

Key Capabilities

What makes Butterfish powerful

Contextual Command Help

Ask natural language questions about shell commands and get instant explanations with examples tailored to your current directory and history

Implementation Level Professional

Script Generation

Generate bash, zsh, or fish scripts from plain English descriptions, with the AI understanding your environment and available tools

Implementation Level Advanced

Terminal Chat Mode

Persistent chat sessions that remember context across commands, allowing multi-turn debugging and problem-solving conversations

Implementation Level Intermediate

Command Autocomplete

Intelligent command suggestions with AI-powered explanations of what each option does and potential risks

Implementation Level Professional

Professional Integration

These capabilities work together to provide a comprehensive AI solution that integrates seamlessly into professional workflows. Each feature is designed with enterprise-grade reliability and performance.

Pricing

Start using Butterfish today

Free (Open Source)

Starting price

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Quick Information

Category coding
Pricing Model Freemium
Last Updated 12/7/2025

Tags

command line ai terminal assistant gpt-4 cli automation developer tools open source shell assistant

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