Not my primary controller, but my X10 universe is still alive and kicking thanks to the HABridge, Heyu software, and the CM11A. Five years ago I implemented these on a Raspberry Pi per instructions on coreyswrite.com and easily enabled Alexa voice control for my existing setup.
Nearly a year ago I started on the journey into the world of Home Assistant. Thanks to a fellow by the name of Mark Motley, who had just posted his "X10 MQTT Gateway" Home Assistant add-on, I was able to incorporate my X10 ecosystem into Home Assistant. Alexa voice control, automations, and scenes, together with state-of-the-art UI interfaces are integrated with
My X10 system dates back more than 20 years when I used the IBM Home Director software to program the CM11A with macros and scenes that would "soft-start" the entry-level lamp modules and wall dimmers, with OFF commands that would then dim them to 1% (essentially off for an incandescent bulb). One side benefit was that many of the incandescent bulbs have never needed to be replaced. The integration with newer systems has been almost seamless, as the newer technologies only need to transmit RF commands (as I was used to performing via PalmPads) to the X10 system. I am also able to use existing XPT and Leviton wall-mounted transmitters to trigger non-X10 devices and automations.