Echoo is a free macOS AI assistant that lets you rewrite, summarize, polish, and transform text instantly using keyboard shortcuts. Select text, hit a shortcut, and get results without leaving the app you’re in. No copying, no context switching. Echoo runs locally on macOS and uses your own API key, giving you full control over data and privacy.

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Hey Product Hunt 👋 I’m the creator of Echoo. Echoo started as an internal tool at work after I realized how much focus I was losing by constantly switching apps just to fix text, summarize emails, or adjust tone. What began as a small utility ended up saving a few hours each week for teammates, so I decided to invest more into it and release it publicly. Echoo lets you select text, press a keyboard shortcut, and instantly rewrite, summarize, extract, or transform it — right where you’re working on macOS. No copying, no context switching. It’s completely free, runs locally, and uses your own API key so you stay in control of your data and privacy. I’d love to hear how you’d use it, what works, or what you’d like to see next. Happy to answer any questions!