Hi, there is a complete list of softwares here : http://www.cartographersguild.com/so...-software.html

I don't really draw but I use photoshop and Illustrator because it allow for more freedom and you can find symbols/brushes too.
Each tool is different and provide advantages and limits. A good article by one of the guild member about that : The Cartographer's Table - Which Mapping Software is Best for You?