SVG Map consortium released SVG Map Toolkit 0.3.0 that aims to become a standard Web Map platform.
It is also high-performance
SVG Viewer for Internet Explorer that enhances the SVG 1.1 Tiny specification.

SVG Map Toolkit can be downloaded from the following link.

Moreover, the world SVG map based on VMAP can be browsed from the following link.

This map is scrollable and zoomable. And, In a part of region in Japan,
1:25000 scale map that Geographical Survey Institute of
Japan is publishing will be able to be browsed by zooming up.