Big Talker is ported. I believe Lannouncer is also ported and working.
Alexa TTS is possible, but requires a script running on a separate RPi or PC. And there's a cookie you need to get from Amazon to make it work. Eventually, it should be possible to trigger a virtual device and have Alexa say what you want via an Alexa Routine, but this will require the Hubitat Alexa Skill to be updated as the SmartThings skill is now for contact sensors and motion sensors.
