Onhand
An AI tutor for your open tabs
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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.
PH · launched Sep 18, 2026 · 2 upvotes (top 26%) · 0 views
Niche: ai tutoring and learning platforms · 328 launches, 27 in the last 7 days ▼ -13% · Explore this niche →
Category and tags
- Education
- Agent / copilot
- B2C
- AI-native
- Commercial product
- Productivity
- Education
- Artificial Intelligence
- GitHub
- OpenAI Day
Visit website ↗ Source listing ↗
More like this: all 328 launches in ai tutoring and learning platforms →
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 : 148 launches clear the similarity bar, closest 8 shown.
Attention rank: #38 of 149 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 197 days after the earliest competitor.
- Learniko · ph · 2026-11-09 · 1 upvotes · similarity 0.46
- TutorLM · ph · 2026-09-18 · 2 upvotes · similarity 0.45
- TutorMate AI · ph · 2026-09-06 · 1 upvotes · similarity 0.45
- LabNotes.ai · ph · 2026-09-25 · 2 upvotes · similarity 0.44
- Ghosthand · github · 2026-09-20 · 30 upvotes · similarity 0.43
- Stringhand · github · 2026-09-25 · 12 upvotes · similarity 0.42
- RPM · ph · 2026-09-17 · 1 upvotes · similarity 0.42
- My grammar ai · ph · 2026-09-27 · 1 upvotes · similarity 0.41
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.