This is just the TrueNAS SCALE App Catalog. It's not being maintained anymore, as iX-Systems, in all their "wisdom" decided to sunset/deprecate TrueNAS SCALE Apps based on kubernets/helm.
We will soon release a smooth migration path for current users. This catalog will likely be moved to https://github.com/truecharts/archive 01-01-2025