80
Stack Score
Editorial pick✓ Verified working
Liner
Liner — research tool curated for working operators.
Try Liner✓ Free trial available
Best for
Best for freelancers who want a research tool that holds up beyond the first demo.
At a glance
- Pricing
- freemiumfrom $13/mo
- Setup time
- 15 minutes
- Learning curve
- medium
- Last verified
- 5/25/2026
What we love
- ✓Solid fit for the research workflows it targets
- ✓Reasonable price floor relative to category peers
- ✓Onboarding that doesn't require professional services
Where it falls short
- −Crowded space
- −Pricing tiers narrow
- −Best on Chrome / iOS
Pricing
✓ Pricing verified May 25, 20262 tiers
Free
$0
forever
- ✓Limited highlights
Premium
$13
per month
- ✓Unlimited
- ✓Premium AI
Why we picked it
On the short list of research tools worth bookmarking. Not the loudest entry but earns its spot when you need it. — MoreAI.tools editor
Overview
Liner is an AI search and annotation tool — highlight web pages and PDFs, get AI summaries and answers cited from your library.
Key features
- ●Web and PDF highlights
- ●AI search across highlights
- ●Mobile apps
- ●Browser extension
- ●Cloud sync
Best use cases
Find primary sources
Surface peer-reviewed papers, official filings, or trustworthy citations on a topic.
Synthesize a topic fast
Compress dozens of sources into a structured brief with citations you can verify.
Integrations
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