I have this question in my mind for a long time.

At first I just wanted to know how can I find a perfect world map shp file me, then I realized I can find a shp file and edit it.

Now the problem with the shp file which can be found in xamWebMap sample is:

1. It's 5780 kb, too large to use in an internet site.

2. Some countries such as Canada, Norway,  there are so many captions for them, I want to remove the ones far away from mainland.

Where can I find a free tool to edit the shp file and make it smaller?