Liner, Joute's Review

The Essentials in 20 Seconds

Search engine with highlights and annotations on results
AI assistant that summarizes pages and answers questions about content
Save and organize your research sources
Pricing: free with limits, $20/month for Pro plan

Verdict: Liner is a useful tool for people who do intensive document research. The idea of combining search, annotation and AI in a single tool is solid. But Perplexity handles part of this work more efficiently for pure AI search.

What is Liner

Liner is a Chrome extension + web app that enhances your web research. When you find an interesting page, you can highlight it, annotate it, save it in collections. AI can then summarize the page, answer questions about its content, and help you find information in your notes.

Primary audience: students, researchers, journalists, and knowledge workers managing many sources.

Strengths

Native highlight and annotation

Web highlighting with Liner works better than Hypothesis or generic extensions. Highlights are synced to your account and searchable.

AI on your own collections

Asking AI questions about a set of sources you've saved is a distinctive feature. It's personal RAG on your document base.

Organization by collections

Organizing sources by project or topic, sharing collections with colleagues: useful for collaborative research.

Limits

Perplexity does better for pure search

If you just want to find information quickly with citations, Perplexity AI is more efficient and faster. Liner is stronger at managing existing sources.

$20/month for this segment

Tools like Readwise Reader offer similar features for readers. Evaluate overlap with tools you already use.

Pricing

Free: limited features, limited highlights
Pro: $20/month

Alternatives

Perplexity for AI search with cited sources
Readwise Reader for annotated reading and source management
Elicit for AI-assisted academic research

Verdict

Liner is a good tool for power users of document research. If you'd annotate and organize your sources anyway, Liner's AI layer adds real value. Otherwise, Perplexity covers 80% of the need more simply.