Avotaynu Consolidated Jewish Surname Index
(Information more than 500,000 different surnames, mostly Jewish, that appear in 34 different databases).

The Douglas E. Goldman Jewish Genealogy Center - (Beth-Hatefutsoth)
(Recommended genealogy links; software; lists of archives; gallery of family trees; lists of microfilms of births,deaths and marriages by towns; advice for the beginner; search orders for the Center's computerized database of genealogies of Jewish families. Also links to Jewish family names on the web and to a search order  for the museum's Database of [the meanings and origins of] Family Names).

EIRI - Eretz Israel Records Indexing (Israel Genealogical Society) 
(רא"י - רשומות ארץ-ישראל (העמותה הישראלית לחקר שורשי משפחה
 (Links to genealogical databases with more than 100,000 records and approximately 20,000 different surnames of individuals. Covers the Ottoman Empire, World War I, the British Mandate, and name changes in Israel from 1949-1979. In Hebrew and English).

Ellis Island Foundation – (American Family Immigration History Center)
(Searchable index of ship manifests of passengers who entered the US at Ellis Island between 1892 to 1924).

JewishGen: The Home of Jewish Genealogy
(Links to bibliographies, name databases, discussion groups,  special projects such as ShtetLinks, Yizkor Books and Holocaust registries, regional special interest groups, organizations and more).

Shtetl  (Basic advice/bibliographies for beginning genealogical research on Jewish families from Eastern Europe and Russia)