Shelf Republic

Shelf Republic is a desktop comic collection organizer for macOS (Windows coming in v1.1). It reads your existing folder structure on disk as the source of truth and displays your collection as cover art on virtual shelves, so you can browse what you own instead of staring at a spreadsheet. It is deliberately not a comic reader. Double-click any file and it opens in the reader you already use (YACReader, Preview, and others). This keeps your reading workflow untouched and your files fully portable. Key features:

File-based: point it at a folder and your library appears in seconds. No import, no migration, no proprietary database. Isolated vaults: keep collections that live in different worlds apart (Marvel separate from European bande dessinée or manga), each with its own tags, ratings and filters. Large cover art with front/back flip, plus expandable series stacks. Search and filter by author, genre, rating or custom tags. No telemetry, no accounts, no cloud sync, no subscription. One-time purchase.

Your files stay yours, in your folders, on your disk. If you ever stop using the app, you lose the viewer, not the collection.