This API allows you to quickly browse all cities in the US (for now) without the burden of authentication. It also provides the ability to find each city within a given radius, find cities by name, and find cities in a specific state – which can come in quite handy when you need to do something with geos.
If you can't find what you need in the functionality of this specific API, feel free to ping me and I may be able to help you out but adding new functionality or even modifying an existing one, don't worry this is for free, there truly is no catch :-)
The documentation provided for this API is mostly generated by ASP.NET Web API native tool, however, I welcome any additions and modifications to it and will be grateful for any useful input. Please note that this API covers ONLY cities and states within the U.S