Onhand
An AI tutor for your open tabs
Details
- External ID
- 1253897
- Source
- PH
- Company
- —
- Product
- Onhand
- Website domain
- producthunt.com
- Launched
- Sept. 18, 2026
- Cohort
- —
- Upvotes
- 2
- Upvotes percentile
- 0.7405388069275176
- Tags
- Productivity, Education, Artificial Intelligence, GitHub, OpenAI Day
- Fetched at
- Sept. 19, 2026, 5:01 p.m.
- Updated at
- Sept. 19, 2026, 5:01 p.m.
Description
Onhand is a contextual AI for learning and research. It highlights the line, leaves a note in the margin, and explains it in the page you're already reading.
Enrichment
- Theme
- ai-powered learning and skills training
- Vertical
- Education
- Function
- Agent / copilot
- Audience
- Prosumer
- AI stance
- AI-native
- Project type
- Commercial product
- Normalized one-liner
- ai tutor for learning from open browser tabs
- Manually corrected
- False
Could you build this?
Yes This is a Chrome extension that scrapes the active tab's DOM, sends selections or content to an LLM API (like GPT-4o or Claude), and injects margin highlights and a sidebar chat.
Competitors
Other products that read as similar to this one — 58 launches clear the similarity bar, closest 8 shown.
Attention rank: #4 of 59 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 197 days after the earliest competitor.
- TutorLM · ph · 2026-09-18 · 2 upvotes · similarity 0.45
- TutorMate AI · ph · 2026-09-06 · 1 upvotes · similarity 0.44
- LabNotes.ai · ph · 2026-09-25 · 2 upvotes · similarity 0.44
- Ghosthand · github · 2026-09-20 · 30 upvotes · similarity 0.42
- RPM · ph · 2026-09-17 · 1 upvotes · similarity 0.42
- Stringhand · github · 2026-09-25 · 12 upvotes · similarity 0.41
- Saitama · ph · 2026-09-20 · 1 upvotes · similarity 0.41
- My grammar ai · ph · 2026-09-27 · 1 upvotes · similarity 0.41
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a agent / copilot tool for Agriculture yet.