Catan World
- Offers gameplay overviews, strategy guides, and discussion forums.
- http://www.catanworld.com

Globetrotter Games
- Review with FAQ, images and rules.
- http://globetrotter-games.com/index.htm?E&game/eSetCat.htm

BoardGameGeek
- Offers file downloads and reviews.
- http://www.boardgamegeek.com/game/13

University of Catan
- Scenario directory, FAQ and listing of available game products.
- http://www.universityofcatan.com/

Constructing a 3D Settlers of Catan Board
- Article describing using silicone molds and resin pieces to create a hand-crafted board with a three-dimensional appearance.
- http://www.io.com/~beckerdo/games/articles/SettlersI.html

S3D Connector
- Online game finder and ELO ladder ranking for Sea3D Windows based 3-dimensional Settlers software.
- http://www.s3dconnector.net/

Kulkmann's Gamebox
- Descriptions and reviews of Settlers, Seafarers, "Stadte und Ritter" (Cities and Knights) and the Historical Scenarios (Alexander and Cheops).
- http://www.solicitor.de/gamebox/reviews/siedlerb.htm

Settlers of Cataan Optional Rules
- A variety of optional rules to Settlers of Cataan.
- http://stobie.home.sprynet.com/games/SOCoptions.htm

Jon
- English rules translation, English cheat sheets for German editions of the basic game, Seafarers and "Stadte und Ritter" (Cities and Knights) expansion set. Map pictures and scenario information for Seafarers and the 5/6 player expansion.
- http://www.yoda.arachsys.com/siedler/

Siedler von Catan Variants
- Rules for Siedler von Catan with two sets and with Entdecker pieces.
- http://sbarrera.home.mindspring.com/game/catan/SMCatan.html

Yahoo Groups: Settlers
- Forum for discussing rules, variants and strategy.
- http://groups.yahoo.com/group/Settlers/

KMWs Spielplatz
- Description, review, pictures and diagrams of the Seafarers of Catan expansion. [English pages on a German site]
- http://www.spielbox-online.de/indxtemp.html?/spielarchiv/kmw/dssef.htm

Unicorn's Rest
- News, variant games rules and site links.
- http://www.unicornsrest.org/reference/catan/

Loose Bits
- Variants: Land Shares, Blood Rules, Poor Man's Seafarers.
- http://www.gamecabinet.com/deeperDrawers/ExtraBits.html