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on-device autocomplete for every text field on macOS

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HN · launched Sep 18, 2026 · 5 upvotes (top 87%) · 0 views

Niche: macos system utilities · 448 launches, 31 in the last 7 days ▼ -30% · Explore this niche →

Category and tags

  • Horizontal
  • Agent / copilot
  • Prosumer
  • AI-native
  • Commercial product

Visit website ↗ Source listing ↗

Could you build this?

Partial While loading a local small language model is straightforward, intercepting cursor positions and rendering system-wide ghost text reliably across arbitrary macOS apps requires tricky macOS Accessibility and Input Method Kit APIs.

What it would actually take: A native macOS app in Swift/Objective-C using macOS Accessibility APIs (AXUIElement) or an Input Method Kit (IMK) engine to hook into active text fields across arbitrary third-party apps, compute caret bounds, and overlay transparent floating ghost text windows. The local inference engine can be powered by llama.cpp or Apple MLX running a quantized lightweight model (1B-3B parameters). The primary challenge lies in handling accessibility quirks, non-standard UI toolkits (Chromium, Electron, Flutter), and low-latency input event interception without lagging the OS.

Discussion

1 comment analyzed.

Competitors

Other products that read as similar to this one : 291 launches clear the similarity bar, closest 8 shown.

Attention rank: #226 of 292 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 315 days after the earliest competitor.

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.