CIB Collection Manager
CIB Collection Manager is an opinionated game, comic, and collectible collection management system. It works best without a barcode scanner. It's a little basic, but it's completely usable.
Official site: CIB Collection Manager @ Leavins-Software.com
If you are a developer interested in using MVVM for WPF applications, this program shows one way of developing a WPF interface using a basic MVVM framework called KSMVVM.WPF.
MIT License. Please check LICENSE.txt for full details.