Kartograph is a framework by Gregor Aisch (check out his showcase and his blog) for building interactive map applications without Google Maps or any other mapping service. It was created with the needs of designers and data journalists in mind.

Check out the Projections demo and the Three-dimensional mapping demo.

More showcase here.

The core concept of Kartograph is to separate the mapping process in the map generation and map rendering part. The client-side library kartograph.js renders pre-generated maps stored in SVG files.

You can chose among hundrets of ready-to-use maps or simply generate your own using kartograph.py, the open source Python SVG map generator. More about this.

Github link