I see several that can push notifications from self hosted services like Gotify, Pushbit, Uptime Kuma, etc. But is there anything that can handle SMS portion that PB does so dang well? I tried KDE Connect and it was not a great experience. But I’ll give it another try once my new PC is built, but between my Macbook and my Android phone it was pretty poor. Slow syncing, delays in sending SMS. That sort of thing.
I’m down to selfhost if there’s a project already out there, but my searches left me empty handed other than the aforementioned apps.
There’s ntfy. I’m not sure if that will fit your bill or not.
I tried it recently and while I love it for my notifications, I was disappointed to see I can send text from my PC to my phone but not the other way around using the android app. Or there’s something I’m doing wrong.