Kits and Development Tools
Rapidly evaluate and protoype with hardware development kits, application notes and example code that include energy monitoring, USB, touch sensor, LCD and on-board debugging capability.
Wireless&WiFi
http://www.silabs.com/products/wireless/Pages/default.aspx
Download the Wireless Selector Guide
Sensors
http://www.silabs.com/products/sensors/Pages/default.aspx
Download the Sensors Selector Guide