Good Zigbee/Zensys FAQ
Written on the original Movable Type site and recovered from the Internet Archive.
Well ZWave has formed the Z-Wave Alliance Frequently Asked Questions top combat the Zigbee wave of press around their finalization of the standard. The main difference: ZWave has been in the market for 3 years and has 100 OEMs and works on a proprietary platform that can gaurantee interoperability and works on a different frequency than WLAN (Zigbee experiences significant packet loss with a WIFI network present). I am going ZWave in my house.