Glasp

Overview Glasp is a social web highlighter that has quietly become one of the most interesting knowledge tools on the market by refusing to fit into any of the standard categories. It is not a read later app like Readwise Reader. It is not an AI research assistant like Liner AI or Perplexity. It is not a note taking app like Notion AI. What Glasp is, cleanly stated, is a place where you highlight web pages and YouTube videos and — this is the part that changes the tool — those highlights are public by default, discoverable to other Glasp users, and increasingly enriched with AI summaries and study aids. The one line positioning: Glasp is the highlighter for readers who want their notes to be part of a public knowledge commons, not just a private archive. Its distinctive value is the social layer. Follow other people who highlight in your areas of interest and see their highlights on the same articles you read. Discover new sources through what interesting people are marking as important. Publish your own highlight collections as a de facto learning in public profile. This is a different pitch from every other tool in the category. The tool is free. That is not a limited free tier — the whole thing is free, with AI features included, and the business model is a mix of enterprise partnerships and eventual paid pro features that have not fully rolled out as of 2026. Because it is free, and…