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Coii Ref

An infinite canvas for the references you own

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Coii Ref is a local-first reference manager for Mac. It indexes the image and video folders already on your disk — no import, no upload, no account — and gives you one search line across all of them, with filters and smart views that update themselves as tags and names change. Arrange anything on infinite canvases saved as plain JSON you can version or share. Files never move, and the index stays in sync with Finder. $19 once, 3 machines, all updates, 30-day trial.

PH · launched Sep 22, 2026 · 1 upvote (top 69%) · 0 views

Niche: visual collaboration and ideation tools · 54 launches, 5 in the last 7 days · Explore this niche →

Category and tags

  • Horizontal
  • Workflow automation
  • Prosumer
  • Not AI
  • Commercial product
  • Mac
  • Design Tools
  • Productivity

Visit website ↗ Source listing ↗

Could you build this?

Partial Building an infinite canvas with zoom, thumbnail generation, and metadata indexing across tens of thousands of local high-resolution media files without freezing macOS requires deep local hardware performance optimization.

What it would actually take: A performant tool like this requires Swift/Metal or Rust/Skia, employing SQLite (with FTS5) for fast query parsing across file metadata, alongside background Grand Central Dispatch/GCD pipelines for asynchronous EXIF extraction, color analysis, and proxy generation. The canvas itself requires a virtualized viewport system (caching mipmaps and decoding thumbnails on demand) to prevent massive memory overhead when navigating tens of thousands of media files.

Competitors

Other products that read as similar to this one : 24 launches clear the similarity bar, closest 8 shown.

Attention rank: #23 of 25 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 184 days after the earliest competitor.

  • Coii AudioNotes · ph · 2026-09-21 · 1 upvotes · similarity 0.42
  • Refrax · hn · 2026-03-22 · 12 upvotes · similarity 0.38
  • Refs.Gallery · ph · 2026-10-07 · 2 upvotes · similarity 0.38
  • Sunlight · ph · 2026-11-03 · 14 upvotes · similarity 0.37
  • Refs · ph · 2026-10-09 · 109 upvotes · similarity 0.36
  • refern. · ph · 2026-11-06 · 81 upvotes · similarity 0.35
  • Refcat · ph · 2026-10-29 · 2 upvotes · similarity 0.35
  • Untitled · ph · 2026-10-14 · 1 upvotes · similarity 0.34

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