Substage is an AI‑powered macOS utility that sits beneath your Finder window, letting you control files and perform tasks using simple natural language instead of complex command‑line syntax. It translates everyday requests like “convert to mp4” or “zip these files” into Terminal commands behind the scenes. 

Simplifying file tasks with AI assistance 

With Substage, users can resize images, convert media, organize folders, extract metadata, and even run calculations or system queries just by typing what they want. It supports multiple AI models and can also work with local models for enhanced privacy or custom workflows. 

While highly useful, this app can sometimes generate incorrect terminal commands for complex requests, especially when multiple steps are described in a prompt. This means users must review outputs carefully before execution. Additionally, it requires macOS 15 or newer, limiting its audience to up‑to‑date Apple device owners. 

A clever bridge between natural language and terminal 

Overall, Substage is a clever productivity tool that bridges natural language convenience with the power of Terminal commands. It’s ideal for users who regularly manage files and want to automate repetitive tasks without learning command‑line syntax, while also providing flexibility for advanced AI integration.