Password manager. While some may cache on your client devices, by and large if your server goes down, no passwords.
Looks promising but like many others I need the ability to manage multiple hosts. That said I suppose there’s no reason you can’t spin up multiple instances, one on each host.
This. I code some services to work around my existing self-hosted apps but they’re just for my own personal use. I don’t have the motivation (or ability) to code big projects for other people, but sometimes, if the code is good enough, I’ll release the source and some instructions to GitHub. I’d never know what people smarter than me could do with it otherwise. Already had my first couple of forks and gave me the chance to get feedback from others on my coding.