Project information: Tellico is a software for organizing your collections. It provides default templates for books, bibliographies, videos, music, video games, coins, stamps, trading cards, comic books, and wines. You can also create your own custom collection of anything you like!
Nightly testing flatpak builds for Tellico have been added to the kdeapps repository. I anticipate Tellico coming to flathub at some point in the near-future.