- Ancestry.com — At this site you can enter a name and simultaneously search dozens of different databases. Many are free and others require membership. You can also search and trade GEDCOM files with other researchers, read articles on genealogy and more.
- FamilySearch — A large (and growing) collection of genealogical resources from the Church of Jesus Christ of Latter-Day Saints.
- US GenWeb Project — This volunteer project is organizing genealogical resources for every county in the United States.
- RootsWeb — RootsWeb provides a variety of genealogical services, including the ROOTS-L mailing list, links to genealogical resources, informations for beginners and hosting services for genealogical e-mail lists and websites.
- Cyndi’s Genealogy List — Cyndi Howells maintains a wealth of information on historical maps, genealogy of different countries, and other related information, including an excellent guide to creating your own genealogy home page.
- Geni — This social networking site for genealogy allows users to collaborate with family members to create family trees in a secure and private environment, importing and exporting data in the standard GEDCOM format
- MobileGenealogy.com — News, reviews and features about genealogy software for mobile devices