Glasp
by Glasp Inc
FreeSocial web highlighter and knowledge management tool with AI summaries for articles, PDFs, YouTube videos, and research papers.
Overview
Glasp is a social web highlighter that lets you save highlights and notes from articles, PDFs, YouTube videos, and Kindle books — all organized in a personal knowledge base. AI features summarize content, generate key takeaways, and connect related highlights. The social aspect lets you discover what others in your field are reading and highlighting.
Pros & Cons
Pros
Completely free with no limits on core features
AI summaries for articles and YouTube videos
Export to Notion, Obsidian, Readwise
Social discovery of curated content
PDF and Kindle highlighting
YouTube transcript with highlights
Cons
Chrome-only (no Firefox/Safari extension)
Social features not for everyone — highlights are public
Limited organization/tagging system
Mobile experience not as polished