Readwise has become the default for turning highlights into a durable knowledge habit—capturing from what you read, resurfacing key ideas, and increasingly bundling a full reading workflow via Reader. The alternatives split into distinct camps: Omnivore offers a FOSS, newsletter-to-inbox replacement angle with strong PKM sync; Matter doubles down on a polished read-it-later queue with audio as a first-class feature; Recall pushes an AI-first “second brain” built around summaries, YouTube workflows, and interactive learning; Raindrop.io excels as a fast, cross-platform bookmarking and organization layer; and Glasp keeps things lightweight with web highlighting plus daily email review.
In evaluating options, we weighed pricing and openness, read-it-later and newsletter ingestion quality, highlight capture and resurfacing loops, integrations with Obsidian/Logseq and browser/mobile platforms, offline and audio reliability, and how well each tool supports different consumption modes (articles, PDFs, and especially YouTube) without adding friction.