Open source Collections for macOS

Calibre

Calibre is a free and open source e-book library management application developed by users of e-books for users of e-books. It has a cornucopia of features divided into the following main categories: (GPL)

Linux - Windows - macOS

Data Crow

Data Crow is the ultimate media cataloger and media organiser. It allows you to create a huge database containing all your collected items. You can use online services to retrieve the information instead of typing all the information yourself. (GPL)

Cross-platform

GCstar

GCstar is a free open source application for managing your collections. (GPL)

Linux - FreeBSD - Windows - macOS

3 applications