Taplist.io is a simple tool to create a digital beer tap list. It takes minutes to set up, looks great, and works on any TV and the web.
[They have a 4-tap free version, and an inexpensive hobbyist price tier.]
The SMS option (playSMS.org) might be a starting point for developing a zero-trust 2-factor authentication gateway.
Sip-ua.com
Additional licensing required to be a contractor, but at least one person at the firm has to be a full electrician or a Limited Energy (low-voltage) Technician.
Links to http://www.monkeytailportablesanitation.com/ which is in Florida?
Cheaper than BTGuard and TorGuard.
A program to establish communication in the event of a major earthquake in Portland
If I wanted to get code-nerdy, I could bypass the whole OpenHAB/Domoticz stuff and go straight to coding. But ouch, there's enough coding involved in the others to make it challenging, and I'd be lacking a friendly digital user interface.
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