Is there any Map / GIS application that generates map images with symbols on Longitude Latitude

I need a map applica开发者_运维技巧tion or API that can load customized symbols on world map, using longitude and latitude and also generate output image of the map.

Web API, won't work for me because i will be loading a very huge number of symbols, millions of symbols (It freezes browser and doesn't generate image).

Generic Mapping Tools (GMT) http://gmt.soest.hawaii.edu/

Mapyrus http://mapyrus.sourceforge.net

both of these solutions are free but require some programming to define what data you want to read, and what output you want to generate.