Sports Draw
sportsdraw.co.uk
Given a list of competitors does the draw for a knockout competition.
Universal System of Rating a Macrotournament
rt.ustu.ru
Mostly in Russian, with one English page on a general theory of rating tournaments.
Tournament Organizing
kttl.helsinki.fi
Advice for orgainzers of Go tournaments, with particular emphasis on the judicial aspects (which would apply equally to a tournament of any similar game).
SportsNuts
sportsnuts.com
Helps organize and manage sports events, providing online registration, coordination, promotion, and merchandise sales.
Tournament Management
oxfordcroquet.com
Includes a detailed explanation of the Swiss design.
LeaguePro Interactive Sports Websites
leaguepro.com
Provides website and league management services.
Tournament Designs
jdawiseman.com
12 teams wish to play an all-play-all at 6 venues over 11 rounds. Schedules for such all-play-all tournaments up to 26 players, and for carry-over tournaments up to 16+16=32 players, in HTML, PDF and txt formats.
Tournament Organisation
afda.com
General-purpose advice for tournament organizers, specifically in the context of Ultimate Frisbee, but more widely applicable.