Chicago & Illinois Tourist Office (official) - www.gochicago.com
Chicago Office of Tourism - www.cityofchicago.org/tourism
Chicago Traveler - www.chicagotraveler.com
Choose Chicago - www.choosechicago.com
City Clerk of Chicago - www.chicityclerk.com
City of Chicago - egov.cityofchicago.org
City Search - chicago.citysearch.com
Go Chicago Card - www.gochicagocard.com
I-Go Car Sharing - www.igocars.org
The Local Tourist - www.thelocaltourist.com
PILMC: Chicago Parking Map - www.chicagoparkingmap.com
Your Chicago Search Engine - www.chicago.com
Many more to come