Hi,
I guess it depends on your needs. There are a lot of "professional" (read: expensive) stuff out there for large tournaments, but thats probably more than you need for small/medium tournaments.
Untill recently I've been using challonge.net for tournament setups. It's ok, but it doesn't handle the black/white advantages at all, so you'll have to keep track manually (not really meant for chess). Also, it sucks on tablets and smart phones! So my best tip at the moment is the "Chess Tournament"-app. Only handles 16 players, but i think that will change in coming versions.
Challonge:
http://challonge.net
The app:
https://play.google.com/store/apps/details?id=no.dcapps.chesstournament
For the more expensive ones, I think Tournament Director is a safe bet:
http://tournamentdirector.co.uk/
Hope it helps :)
Hey!
Does anybody know about a good chess tournament management tool for mobile devices or pc?
Beforehand, Thanks! :)