When household readers want a single web portal to search, request, and deliver ebooks and audiobooks without juggling separate indexers or download clients, Shelfmark unifies the entire acquisition pipeline in one self-hosted hub. Universal search mode queries Hardcover, Open Library, and Google Books for rich cover art, series order, and edition metadata before aggregating matching releases across every configured source. Direct search mode queries individual providers immediately for rapid title lookups. You can connect Prowlarr torrent and Usenet indexers, direct web download mirrors, IRC book channels, and Soulseek peers through slskd inside one unified interface. Multi-user accounts support granular request policies where family members or friends submit book or release requests for admin approval, complete with per-user language preferences and custom delivery targets. Completed downloads automatically rename and route files into Calibre, Calibre-Web, Grimmory, BookLore, or Audiobookshelf watch folders, or dispatch directly to e-readers over SMTP email. Built-in authentication supports local credentials, reverse proxy headers, OpenID Connect single sign-on, and existing Calibre-Web user databases. Optional WireGuard VPN with a fail-closed kill switch and Tor routing keep external indexer queries private. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.