Multiplayer

aBridge
Free cross-platform online bridge game with support for Windows and UNIX.
http://www.abridgegame.org

Bridge Club Live
Provides live internet play of contract and rubber bridge using Acol or SAYC systems, and has free guest memberships.
http://www.bridgeclublive.com

Bridge Doctor
Interactive contract bridge lessons and club. Offers a competition ladder.
http://www.bridgedoctor.com

BridgeBase Online
Offers play and practice areas. Presentation of live vugraph of major events. Free.
http://online.bridgebase.com/

e-bridge
Offers many tournaments every day, lessons, articles. Hosts the ACBL official online club. Awards masterpoints for elegible North American players.
http://www.e-bridgemaster.com/

Floater
Matchpoint pairs and IMP pairs online bridge. Provides FAQs, links, download for Windows, Mac OS, and UNIX.
http://www.floater.org/

OKbridge
Offers social rooms and tournament play.
http://www.okbridge.com/

Paragon Bridge
Windows 95/98/2000/NT/XP. Software to play against the computer or online.
http://bridge.qed-online.com

StepBridge Australia
Free online playing. Windows.
http://www.stepbridge.com.au/

Swan Games
Provides bridge software and online support.
http://www.swangames.com

Topbridge
Offers individual games, tournaments, rankings, and links.
http://www.topbridge.com/