Bluetooth SIG - Responsible for developing wireless PAN specifications.

Cellular Telecommunications and Internet Association (CTIA) - Represents 
cellular, personal communication services, mobile radio, and mobile satellite services over wireless WANs for service providers and manufacturers.

Federal Communications Commission (FCC) - Access to regulations and reports dealing with frequency allocations for wireless networks.

GSM Association - Participates in the development of development of the GSM platform - holds the annual 3GSM World Congress. 

IEEE 802.11 Working Group - Responsible for developing wireless LAN standards. 

IEEE 802.15 Working Group - Responsible for developing wireless PAN standards.

IEEE 802.16 Working Group - Responsible for developing wireless MAN standards. 

MuniWireless - Website that focuses on the latest news related to the deployment of municipal wireless networks.

Wi-Fi Alliance - Develops wireless LAN ("Wi-Fi") specifications based on IEEE 802.11 standards and provides compliance testing of Wi-Fi products.

WiMAX Forum - Develops wireless MAN standards based on IEEE 802.16 standards and provides compliance testing of WiMAX products.

Wi-FiGurus.com - An interactive community of WiFi professionals. 

Zigbee Alliance - Develops standards for low-power wireless monitoring and control products.