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Set, offline Markdown note-taking app with device-to-device sync

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Hi HN. I am an avid user of Notion (https://notion.so) and really like the ergonomics of its block-based editor, but with how the product is evolving I felt I was missing a simple "single-player" experience of just taking notes and jotting down my thoughts. Hence, Set exists. It's in beta and all feedback is appreciated.You can use the app in the browser but notes are saved only to that browser session. The device-to-device sync and local dictation is desktop only. All notes are saved as markdown files in a folder you choose on the desktop app.Source: https://github.com/rootstring/setReleases are available for macOS, Windows (x64), and Linux (x64 only for now): https://writewithset.com?download=true

HN · launched Sep 19, 2026 · 11 upvotes (top 38%) · 0 views

Niche: note-taking and writing apps · 264 launches, 27 in the last 7 days ▼ -23% · Explore this niche →

Category and tags
  • Horizontal
  • Workflow automation
  • Prosumer
  • Not AI
  • Commercial product

Visit website ↗ Source listing ↗

More like this: all 264 launches in note-taking and writing apps →

Could you build this?

Partial The block editor and markdown UI are straightforward, but reliable peer-to-peer or device-to-device sync without data loss requires complex CRDTs or distributed sync protocols.

What it would actually take: Requires implementing conflict-free replicated data types (CRDTs such as Yjs or Automerge) on top of local-first storage (IndexedDB / SQLite). For peer-to-peer sync, it requires a discovery and signaling layer using WebRTC or local network mDNS discovery, with reliable offline queueing, chunk hashing, and encryption protocols to handle network partitions and concurrent multi-device edits cleanly.

Discussion

1 comment analyzed.

Competitors mentioned: Notion

Competitors

Other products that read as similar to this one : 353 launches clear the similarity bar, closest 8 shown.

Attention rank: #161 of 354 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 291 days after the earliest competitor.

  • Notevra · ph · 2026-11-11 · 1 upvotes · similarity 0.52
  • Handwritten Digital Notes · ph · 2026-10-26 · 1 upvotes · similarity 0.48
  • Notion-to-site · hn · 2026-05-08 · 5 upvotes · similarity 0.48
  • Quick Write · ph · 2026-09-09 · 2 upvotes · similarity 0.47
  • Markling · ph · 2026-10-23 · 2 upvotes · similarity 0.46
  • Noteline · ph · 2026-10-31 · 2 upvotes · similarity 0.45
  • Free Notepad · ph · 2026-10-21 · 2 upvotes · similarity 0.45
  • VB Notes · ph · 2026-11-14 · 71 upvotes · similarity 0.45

Related data

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