The Kartograph map generator has just one method, which is there to generate SVG maps (surprise).

Different map tiles

A Modern, Lightweight Open-Source JavaScript Library for Interactive Maps

TileMill is an application for making beautiful maps

A javascript library to hide differences between mapping APIs.

Creating custom maps in the cloud

The GeoNames geographical database covers all countries and contains over eleven million placenames that are available for download free of charge.

This is a free software web service that allows you to generate maps of cities using OpenStreetMap data. The generated maps are available in PNG, PDF and SVG formats and are ready to be printed.