Raindrop.io is a bookmark manager for saving books, articles, videos, songs, and other links found while browsing. Saved items live in collections with tags, filters, and several view modes.

Collections and tags - group bookmarks with icons, tags, filters, manual sorting, and batch editing.
Full-text search - search inside saved pages, PDFs, and even spoken words in YouTube videos.
Permanent copies - automatic archived copies so items stay available if the original page is removed, plus backups to Dropbox or Google Drive.
Highlights and preview - annotate pages and read articles or watch videos without leaving the library.
Sharing - collaborate on collections with permissions or publish public pages that need no sign-up.
Everywhere access - browser extensions for Chrome, Firefox, Safari, and Edge, plus Windows, macOS, iOS, and Android apps, with an API and AI assistant integrations.

It is used by individuals organizing research and reading lists and by teams sharing resource collections. Bookmarks, collections, and devices are unlimited on the free plan, and a paid Pro plan adds premium features with details on the pricing page.