Any2K is a private content library and read-it-later service that helps people save, organize, and revisit what they read online. It brings articles, newsletters, RSS feeds, and supported files together in one archive, preserving copies so saved material remains available even if a webpage changes or disappears. Users can capture content through the web, mobile, email, and browser extensions, and import reading lists from other services or files.

The service offers a synchronized reader across computers and mobile devices, with offline access, searchable highlights and notes, AI summaries, and text-to-speech tools. Its Kindle delivery features let readers send saved content as one-time bundles, schedule recurring issues, or set up automatic delivery. Filters based on tags, sources, timing, and other rules help tailor what arrives, while supported files and RSS feeds can be included alongside articles and newsletters. Any2K supports Chrome, Firefox, Edge, and Safari browser extensions, as well as iOS and Android apps.