Productivity
Browser Tab Triage Extension
Group, summarise and close your open tabs in one click
Intermediate14h1–2
Chrome extensionLLMEmbeddings
17/20Collaborative Whiteboard with AI Clustering
Brainstorm on a shared canvas and let AI group sticky notes into themes.
Advanced26h2–4 people17/20 fit
Build Collaborative Whiteboard with AI Clustering for teams running brainstorms in ~26h with 2–4 people. Stack: tldraw + Yjs + Embeddings + LLM.
Why it wins: Multiplayer plus AI with a magical animation.
Build flow
01 · Problem
After brainstorms someone spends an hour grouping 200 sticky notes.
02 · Solution
Build a multiplayer canvas with tldraw and Yjs, embed each sticky note and cluster them into labelled groups that animate into place.
03 · Build
- 1Set up tldraw with Yjs sync
- 2Embed notes
- 3Cluster and label
- 4Animate positions
04 · Demo
Have the audience add notes from phones and click 'cluster'.
MVP checklist
- Shared canvas
- Sticky notes
- AI clustering
- Theme labels
Tech stack
| Tech | Role | |
|---|---|---|
| tldraw | Infinite canvas | UI |
| Yjs | CRDT realtime sync | Backend |
| Embeddings | Semantic similarity | AI |
| LLM | Language model | AI |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
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