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AI writing assistant

FatFingers

Desktop app that corrects, rewrites or translates text over any application with a global shortcut.

Reactive product
FatFingers
Industry
Tools
Services
Applied AI
Screenshot 1 of FatFingers

The challenge

Fixing a message with AI usually means switching windows, pasting, waiting and copying back. FatFingers is a floating assistant in the style of Spotlight: open it with a shortcut, press Enter to improve the text and it goes back where you were typing.

What we built

  • Actions: correct, professional, shorten, friendly, quick reply and a custom instruction.
  • Rewrite and translate in a single step.
  • Bring your own AI provider. Calls go out from Rust, never from the UI.
  • The API key lives in the system keychain, with no telemetry or history.
  • Builds for macOS, Windows and Linux.

Screenshots

Screenshot 2 of FatFingers
Screenshot 3 of FatFingers
Screenshot 4 of FatFingers

Technologies

Interface
React 19TypeScriptVite
Backend
RustTauri 2
Services
OpenAIOpenRouterMiniMax
Infrastructure
GitHub ActionsmacOSWindowsLinux

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Something similar in mind?

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