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

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

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

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

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

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

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

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/

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

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

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