there is an pretty AWESOME thingy on
www.soldat.plit is called soldat dedicated server
http://soldat.pl/en/downloadsyou can host this way your server and it will be available without hamachi
and playable over THE INTERNETS!
the only problem is if you have dynamic ip cause the ppl can join then only over the lobby
i have my server for some time, and it is great, cause you have access to all functions in the root folder
its pretty awesome, but i suggest you get a limitless bandwith first
hamachi is better for some games that are nearly impossible to play normaly, like red alert 2
edit: as for the poll, hamachi supports all programs that have a lan connection possibility, so i dont get it