Your e-reader knows exactly where you stopped reading, and Sake makes your whole library know it too, with a self-hosted web library that syncs KOReader progress, notes, and highlights across every device you own. Browse your collection in a clean web app with covers, metadata, shelves, ratings, and reading state, and organize it with rule-based shelves that file new books automatically according to conditions you define. Pair a KOReader device once and progress uploads in the background when the reader sleeps, new books download on request, and highlights land in a searchable annotations hub where you can edit notes inline and export them as Markdown or JSON. An existing on-device library can be exported back into the web app complete with its sidecar data, so years of reading history move with you. Search providers including Open Library, Project Gutenberg, and Anna's Archive (through Libgen mirrors) put new books one query away from your shelves, and metadata lookups enrich them from Google Books, Open Library, or Hardcover. OPDS and WebDAV endpoints serve any compatible reader app with optional separate Basic-auth passwords, the built-in plugin updater keeps the KOReader plugin current without manual file copying, and reading statistics chart your habits across the library. The installable progressive web app keeps the library one tap away on phones and tablets. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.