@fastfinge I also use Miniflux as my feed reader of choice, its easily one of my most used applications.
How does kubo work? Is it similar to Dropbox? For file syncing and sharing links to other people, I use Seafile.
For uptime monitoring, I use Gatus. I like that it uses YAML to configure various endpoints, which is faster than having to use a GUI that may or may not work.
I've been looking for a notes solution, how's Joplin's accessibility?
