Tiqit Computers Manufacture a matchbox sized PC for the wearable computing industry as well as a handheld PC (570g) running standard operating systems. http://www.tiqit.com/

Intrinsyc CerfBoard StrongARM/XScale-based board with Ethernet and CF support running Linux or WinCE. Documentation, updates and example projects available on-line. (Used by MIThrill.) http://www.intrinsyc.com/products/cerfboard

Clothing+ Finlandic enterprise focusing on the design and manufacture of wearable technology. http://www.clothingplus.fi/