xPL – light, Windows-based system for home automation announced last month support of Z-Wave devices. xPL already provided an interface to use RFXCOM devices, WGL Designs W800RF32 X10 RF Receivers and X10 RF modules.
Additionally, xPL allows to control your home via MCE using xPLMCE Home Automation Add-in. xPL developers are going to add support 1-Wire sensors and RF receivers/transmitters for X10 devices soon.
To extend xPL functionality or add support of new devices you can use Perl, Java or VB API. For more information please visit xPL site.