- Gitlab (version control)
- Bookstack (wiki)
- Joplin (not a webapp, but sync server)
- Semaphore (does all of my infra updating via Ansible)
- Uptime-Kuma (monitoring/alerting)
Been thinking about adding NextCloud mostly for the Google Docs/MS Office replacement at some point.
But honestly most of my stuff is just for me, my family prefers to to use whatever commercial thing is out there. So I tend to limit things to infrastructure type things that are of personal interest to me alone.