Mapnik

Being designed as a toolkit aimed at developers interested in creating mapping applications, Mapkit was built upon a C++ shared library that boasts all the patterns and algorithms you may need to employ in your tasks. Nevertheless, it does allow you to use Python or Javascript bindings as well.
To be more specific as to the purpose the software utility serves, it should be said that it offers the necessary resources in order to integrate spatial data access and visualization features into your programs. Needless to say, styling your maps is possible so that you can enhance their design.
While its main focus is on web-based development, the library is also capable of handling a multi-threaded environment. Comprising a wide array of geographic objects, among which layers, maps, geometrics, datasources, and more, Mapkit allows you to deploy it to the server environment of your choice.
It is important to point out that what Mapkit promises is seamless text appearance as well as high-quality shapes and anti-aliasing.
You may also want to know that support for a plugin architecture read access is integrated into Mapnik, which makes it capable of working with a multitude of formats.
Complete documentation on Mapkit’s functionality is available at this link.