OpenChecklist
- Free resource for Sports and Non-Sports trading card checklists
- http://www.openchecklist.com

The Consummate Card Collector
- Provides a nice look at the sportscard industry. Features information explaining the various kinds of cards and ways to collect them.
- http://mypeoplepc.com/members/commando/consummatecardcollector/

Uncataloged trading cards
- Previously unknown nonsports trading cards, mostly pre war candy and gum.
- http://www.tradingcards.biz

CardFu Sports Card Blog, News, and Community
- Features a blog about sports card collecting news and commentary, trading and discussion forums, and free sports card image hosting.
- http://www.cardfu.com

Hobby Insider
- Includes message board, interviews, and reviews.
- http://www.hobbyinsider.net

GDS Cards (Horseracing Trade Cards)
- The sole manufacturer of GDS Cards collectable horseracing cards and post cards, also dealing with racehorse artists in horseracing art, horseracing prints, horseracing paintings and racehorse photographs.
- http://www.gdscards.co.uk

Autopatchcards.com
- NFL, NHL, NBA, and MLB autographed, and limited-release cards. Personal trade lists, offers, auctions, and pictures.
- http://www.autopatchcards.com/

WrestlingTradingCards.com
- Complete checklists of all professional wrestling trading cards, from the late 1800s to current.
- http://www.wrestlingtradingcards.com

Prospects Sports Cards & Comics
- Prospects Sports Cards & Comics has been serving card and sports collectors since 1989 providing great service and pricing on Collectibles, Hockey cards, NASCAR collectables and Sports Trading Cards.
- http://www.prospectssports.com

Sport Swapper
- Sport Swapper is the premier place to swap, buy, and sell baseball cards, football cards, hockey cards, basketball cards, golf cards, and other sports memorabilia.
- http://www.sportswapper.com

Naxcom.com
- Buy/sell sports collectibles marketplace with no listing, membership or monthly fees.
- http://www.naxcom.com

The American Card Exchange
- Trading platform for sports cards...nascar, baseball, football, basketball, hockey, etc.
- http://www.theacex.com

HobbyGuy.net
- Personal hobby site focusing mainly on sportscards, music & movies.
- http://hobbyguy.net

CardTarget.com
- Tools for collectors of eTopps online trading cards. Includes price guides, auction search, market tools, and community message boards.
- http://www.cardtarget.com

Trader Retreat
- Features trading discussion forums for all major sports including basketball, football, baseball, hockey, and golf. Chat room included.
- http://www.traderretreat.com/

SportsCardFun.com
- A baseball card trading community. Other sports cards available for trade include football, basketball and hockey cards.
- http://www.sportscardfun.com

Sportscard Guarantee Corporation
- Sportscard grading and authentication. SGC gives a written grade guarantee on each card it grades.
- http://www.sgccard.com

Sports Card Forum
- Message boards and online marketplace for trading card enthusiasts and merchants.
- http://www.sportscardforum.com/

Collector Link
- Search engine for locating trading card collecting sites. Over 2000 sites are catalogued.
- http://www.collector-link.com

Checklist Central
- Checklists for baseball, football and basketball. Basic and collector series available.
- http://www.checklistcentral.com

Sportlots.com
- Marketplace that sells cards for dealers. Searchable database, registration information, bonus program.
- http://www.sportlots.com

Global Authentication Inc.
- Provider of grading and authentication services. Site includes pricing information, trade show dates, dealer list, mentors, account login and specials.
- http://www.globalauthentication.net/

eTopps Clubhouse
- Contains trading board, checklists, chat room, trivia quiz, news, polls, and contests.
- http://www.etoppsclubhouse.com/

The Topps Company, Inc.
- Manufacturer of sports trading cards including baseball, football, basketball, and hockey. Provides sports message forum.
- http://www.topps.com/

The Upper Deck Company
- Producer of major sports trading cards. Offers tips on collecting, card checklists, athlete search, hologram database, memorabilia registry, trade and hobby show information.
- http://www.upperdeck.com/

Professional Sports Authenticator
- Card authentication and grading service. Message forum, collector club, registry, and submission of cards for grading by PSA experts.
- http://www.psacard.com/

Fanatic Collector
- Provides pricing, live auctions, historical charts, and research on cards from major auction sites. Brings stock market data over the Web and Wireless Devices.
- http://www.fanaticcollector.com/

Get That Card
- Listings of links to various types of collectors. Collectors database, hobby links and free membership.
- http://www.getthatcard.com

Sports Card Source
- Information on the hobby. Searchable database of players cards.
- http://www.sportscardsource.com

Sportsology Cards
- Hobby news, reviews and first looks at trading cards from all major manufacturers. Discussion boards, chat, store finder.
- http://www.sportsology.net/cards.php3

Modern Era Sports
- Dedicated to integrity in collecting. Discussion boards, chat, polls, free email, and links.
- http://webvena.com/webs/akafocus/index.htm

APBA Games
- Card collector software for managing collections. Major League Baseball board game, pro football board game and Baseball for Windows. Includes downloads, player list, and kid's clubhouse.
- http://www.apbastadium.com/

Delphi Collectibles Forum
- Offers a variety of articles relating to collecting cards and memorabilia. Includes links.
- http://forums.delphiforums.com/collect/public/cards.html

Trader Crack's Sports Card Trading
- Features chat, want list, newsletter, calendar, trading tips, card test lab, and links.
- http://www.tradercracks.com/

Trading Card Central
- Resources for sports and non-sports trading card collectors. Includes hobby news, articles, box breaks, product reviews, forums and more.
- http://www.tradingcardcentral.com

The Sports Cards Answer Man
- Offers collector email newsletter from a consumer point of view, as well as classifieds, message board, and links.
- http://www.sportscardsanswerman.com/

The Pit
- Buy and sell trading cards including baseball, football, hockey, and basketball at online market. Provides message forum.
- http://www.thepit.com/