works with EtherCalc in a sandbox with authentication
Talkatone http://www.talkatone.com
TextNow http://www.textnow.com - also offers mobile service, similar to Republic Wireless
GrooveIP https://snrblabs.com/GrooVeIp - Android only, limited use for free
Visual voicemail and robocall blocking
YouMail https://www.youmail.com
My Visual Voicemail https://play.google.com/store/apps/details?id=com.vna.service.vvm
CallControl/EveryCall https://www.callcontrol.com/
Truecaller https://www.truecaller.com/
Should I Answer? https://www.shouldianswer.net/
Nomorobo http://nomorobo.com/ free for (some) voip lines
Hiya https://www.hiya.com/products/app recommended by AT&T, freemium
Apparently, Nextcloud has to be tweaked in a nonstandard way for the Nextcloud app for Keepass to connect to your own files.
It's a full OS, so you'd have to figure out how to get it installed on a VM through a hosting provider, or run it at home/work. Unless maybe it can be installed on top of plain Debian?
Doesn't seem to save an archived copy by default like Shiori, and more Android app options
