A bookmarking app is software for saving web URLs (typically with metadata: title, tags, notes) and re-finding them later — distinct from a read-later app, which emphasises deferred consumption.
Why it matters
The category dates back to del.icio.us (2003); Pinboard, Raindrop.io, and Diigo are current incumbents. The format is mature: paste URL, tag, search, browse. The unsolved problem is *retrieval at need* — a bookmark from six months ago is invisible unless you search exactly the right keyword.
AI-augmented bookmarking apps (Pith, Mem, Memex variants) add semantic search, auto-tagging, or wiki synthesis to address this. The bookmark stops being the artefact and becomes the input.
How Pith relates
Pith is a bookmarking app at the input layer (browser extension, email, RSS) and a knowledge tool at the output layer. For pure bookmarking with no AI, Raindrop is leaner.
See also
Last reviewed: 10 May 2026 · Licensed CC BY 4.0 · cite freely with attribution to Pith.