roadmap.是一个gis开源软件。可以用于做gis应用开发。可以用在嵌入式中。是做导航软件不可缺少的软件。开源的，纯c代码，移植性好-roadmap. Gis is an open-source software. Gis can be used to do application development. Embedded can be used in China. Navigation software is so indispensable software. Revenue, net