Promptly
Instant AI on any selected text
Switching between your editor and ChatGPT to rewrite a paragraph is a workflow killer. Promptly puts AI directly in your text selection — select anything, press ⌘U, and the AI result replaces the original text on the spot.
What it does
Works in any macOS app. Select text in Mail, VSCode, Notes, a browser — anywhere. Hit the shortcut, pick a command (fix grammar, change tone, translate, summarize, explain code), and the result lands right where the original was. No copy-paste, no context switch.
Ships with 15+ built-in commands. You can also create custom ones with full control over the prompt, model, and temperature. Supports multiple AI providers — bring your own API key for OpenAI, Anthropic, or Google.
How it's built
Native Swift macOS app using the accessibility APIs to read and replace text selections system-wide. API keys stay on your machine — no backend, no data collection. Distributed through the Mac App Store.