Namtang is a public transportation navigation system for Bangkok and its metropolitan area. It compiles details of public transport by road, rail, and water within Bangkok and the surrounding provinces (Nonthaburi, Pathum Thani, Samut Prakan, Samut Sakhon, and Nakhon Pathom). The system has also been extended to key cities such as Ranong and Krabi, linking public transportation projects.

Namtang supports both web applications and mobile applications on iOS and Android platforms. Users can search for public transport routes, fares, travel times, and more. It provides accurate, reliable, convenient, and efficient travel information, making it easier for the public to plan their journeys.

In addition, travel data from Namtang is used by government agencies for analysis, contributing to policy planning that benefits organizational and national development.