Actiontec
Apple Airport - Add an antenna for better range
Belkin
Cisco
D-Link - add an antenna jack for better range
Hawking Technologies
HP
Intel / Xircom
Linksys - add an antenna to a WPC11
Netgear
Panasonic
Proxim now owns what used to be: Agere, Orinoco which used to be Lucent.
Siemens/Speedstream
SMC
Sony
Toshiba
Zoomair