Substage
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TL;DR
Substage is a macOS command bar that sits under your Finder window and converts plain-language instructions into Terminal commands using AI.
Key Facts
Free version: No free version available.
Pricing
Starting at From $29
Standard
- Natural language to Terminal command conversion
- Confirmation prompts for risky operations
- Summaries of executed command results
- Support for external AI providers (OpenAI, Anthropic, Google, Mistral)
- Seamless integration under Finder window
Additional Pricing Information
One-time purchase. Supports your own API keys for AI providers. Also supports local models via Ollama or LM Studio.
Details
What is Substage?
Substage is a lightweight macOS utility that adds a command bar under your Finder window, translating plain-language instructions into Terminal commands via AI. You type something like 'convert all PNGs to JPG' and it generates the appropriate Terminal command, asks for confirmation, executes it, and summarizes the result in plain English. It supports multiple AI providers (OpenAI, Anthropic, Google, Mistral) and can also run local models through Ollama or LM Studio for privacy-conscious users. The confirmation step is a smart safety feature — you review the command before it runs. At $29 one-time with your own API keys, it's affordable. But macOS-only, limited to single-step operations, and the vendor is a small design studio with no established track record. Raycast and Alfred already do Terminal commands plus much more.
Key Features
- Natural Language Commands — type what you want in plain English, get a Terminal command
- Safety Confirmations — review and approve commands before execution
- Result Summaries — Terminal output translated into readable messages
- Multi-Provider AI — OpenAI, Anthropic, Google, Mistral, plus local models
- Finder Integration — command bar lives under the Finder window
- BYOK Model — use your own API keys or local models (Ollama, LM Studio)
- Lightweight Native App — fast launch, minimal resource usage
Who is it for?
- macOS users who want to use Terminal commands without memorizing syntax
- Designers and creatives who need quick file operations without leaving Finder
- Privacy-conscious users who can run local AI models via Ollama
- Anyone tired of Googling Terminal commands for simple tasks
Who is it NOT for?
- Windows or Linux users — macOS only
- Power users who already know Terminal well — this adds a layer of abstraction
- Anyone wanting multi-step workflow automation — Substage is single-step only
- Users who don't want to manage API keys and AI provider costs
The Bottom Line
Substage is a clever idea — a natural language Terminal translator for macOS Finder. The confirmation step and local model support are smart touches. But at $29 one-time plus API costs, for a macOS-only single-step tool from a tiny vendor, it's hard to justify over Raycast or Alfred which already do Terminal commands plus a hundred other things. If you specifically want a lightweight, Finder-integrated natural language interface and don't need a full launcher, it's worth a look. Otherwise, Raycast is the better bet.
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