Here are a few of my favorites, some of which are exposed, some are not:

• Mealie - Recipe management. Import recipes by URL is my favorite feature, then I tweak and try it out (I have to be gluten free, so this makes it easy to track what worked for us).
• Homepage - a homepage to put quick links to all of my stuff, neat and clean.
• Grafana - for visualization of current data of my systems, paired with Prometheus.
• Technitium DNS - for all of my DNS needs.