Comfort Transportation - Major taxi provider in Singapore consisting of Comfort Transportation and Yellow-Top taxis. Provides fares and booking information for passengers. - http://www.comfort-transportation.com.sg/
CityCab - Yellow coloured taxi service provider. Provides fares and information on other related services. Subsidiary of ComfortDelGro. - http://www.citycab.com.sg/
Smart Automobile - Green coloured taxi service provider. Includes fares, news and information for drivers. - http://www.smartcab.com.sg/
Transcab Services - Red top and white body coloured taxi service provider. Provides information on fares, company and contact details. - http://www.transcabservices.com.sg/
Premier Taxis - Silver coloured taxi service provider. Operates under the Silvercab brand. - http://www.premiertaxi.com/