Resources

Searchable records databases

Polish vital records and civil registries
http://szukajwarchiwach.pl/

Polish vital records – births, deaths, marriages
Original scanned records.
http://metryki.genealodzy.pl/?lang=eng

Polish-Jewish records on Jewishgen.org, most from Jewish Records Indexing Poland.
http://www.jewishgen.org/databases/Poland/

All kinds of records, mostly from Central and Eastern Europe, including historical directories, yizkor books, military lists, community and personal histories, Polish schools and other sources.  New genealogy sources are added weekly. Created by Logan Kleinwaks.
http://genealogyindexer.org/

Tools for finding immigration records, census records, vital records, and for dealing with calendars, maps, foreign alphabets, and numerous other applications. Created by Stephen P. Morse.
http://stevemorse.org/

Mostly cemetery records, including photos of tombstones
Requires a subscription to view records
http://www.jewishdata.com

Genealogy sites with family trees

Most of these require a paid membership to view trees and other records:

Ancestry.com

Myheritage.com

Geni.com

familysearch.org – free. Run by the Church of Latter Day Saints (Mormons) in Utah

geneanet.com – Mostly European ancestry.

Genealogical organizations

Polish Genealogical Society of America
http://pgsa.org/

The International Association of Jewish Genealogical Societies (IAJGS)
http://www.iajgs.org/

Ancestral DNA testing

Health and ancestry reports, including ethnic origins and relative search
www.23andme.com

Ancestry reports only, including ethnic origins and relative search
www.FTDNA.com

Immigration records

United States immigration records
www.ellisisland.org

Brazil immigration records
https://familysearch.org/search/collection/1932363

Argentina immigration records
http://cemla.com/buscador/

Australia immigration records
http://recordsearch.naa.gov.au/NameSearch/Interface/NameSearchForm.aspx

Canada Ancestors Search
http://www.bac-lac.gc.ca/eng/search/Pages/ancestors-search.aspx

British immigration records
http://www.nationalarchives.gov.uk/help-with-your-research/research-guides/immigrants/

Holocaust Records

American Jewish Joint Distribution Committee – Search the Archives
http://archives.jdc.org/archives-search/?s=archivestopnav

Yad Vashem Holocaust Victims’ Names Database
http://yvng.yadvashem.org/

United States Holocaust Memorial Museum
in Washington, DC
https://www.ushmm.org/

General Interest

Jewish Heritage Europe
http://www.jewish-heritage-europe.eu/

Avotaynu Online
http://www.avotaynuonline.com/

More about European DNA and genetics, including Jewish
http://www.eupedia.com/