I thought this article would go into more than a handful of apps.

What apps do you think work well for self-hosting, even if it limited to us tech folk?

I've self-hosted Grafana and InfluxDB for monitoring and metrics and found them OK to self host. The authentication and TLS setups were the most annoying.

I've self hosted a few kinds of wiki software, but I eventually settled on a combination of a single Tiddlywiki file and uploading to S3. It works well for most of my own knowledge storage. I even went so far as to write my own plugin to save the Tiddlywiki file to S3, so I can press a button in Tiddlywiki to upload it.

I have a self-hosted docker registry, which is just the reference repository provided by Docker. It has required almost no maintenance since I set it up.

[Edit: for clarity]