Alternatives to Glasp

A browser extension and mobile app for highlighting text on web pages and PDFs and collecting notes. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as Glasp.

  • Hypothesis

    Highlights and annotates any web page or PDF, privately or in a group.

    FreeOpen sourceWebBrowser extension

    Hypothesis is open source under BSD-2-Clause, anchors annotations to text on pages and PDFs, and supports private and group layers, but has no mobile apps listed.

  • Diigo

    A web annotation and bookmarking service with a browser extension for highlighting, tagging and saving pages.

    FreemiumProprietaryWebBrowser extension

    Diigo adds tags, a personal library, an outliner and groups to highlighting, as a freemium hosted service where page archiving requires a premium plan.

  • Liner

    Browser extension for highlighting, bookmarking and AI-summarizing webpages.

    FreemiumProprietaryBrowser extension

    Liner combines highlighting with bookmarking and AI summaries of pages, PDFs and videos, on a freemium plan that relies on cloud processing, and offers no mobile apps listed.

Also worth comparing

These listings name Glasp as their own alternative, so the relationship runs both ways.

  • Napkin

    An iPhone app for collecting quotes and ideas and resurfacing them for reflection.

    FreemiumProprietaryiOS

    Glasp collects highlights from web pages and PDFs through browser extensions and iOS and Android apps, built around a social hosted service rather than private resurfacing.

  • Obsidian Web Clipper

    Official browser extension that saves web pages and highlights to an Obsidian vault as files.

    FreeProprietaryiOSBrowser extension

    Glasp is a free browser extension and mobile app for highlighting web pages and PDFs, storing highlights in its hosted social service rather than vault files.

Similar software

Related functionality, not a direct replacement.