Embedded System that is able to connect to the internet
Some members of the PIC32 family, such as the PIC32MX675F256H and     PIC32MX795F512L include an integrated Ethernet interface.    An evaluation board for the PIC32MX795 is available: DM320004.

You can also add an Ethernet controller and use Microchip's free TCP/IP stack with their PIC18, PIC24, dsPIC and PIC32 families.