Arista Flag Corp
[ http://www.aristaflag.com/ ]
American based flag makers who produce flags for national or international purposes as well as bunting and posters.
[ http://www.fibreglassflagpole.com/ ]
Italian company that makes commercial flags for indoor and outdoor corporate use. Provides accessories as well.
Free Country Flags
[ http://www.free-country-flags.com/ ]
Download packs of country flags in different styles and sizes for free. Search for specific country flags. Download snippets for country dropdown lists.
[ http://www.mega-flags.com/ ]
Hopes to bring forth high quality photos of flags, information about the flag and much more.