Daughters of Utah Pioneers and Their Mothers honors the pioneer women of Utah for their accomplishments
Genealogical Society of Utah
International Society for British Genealogy and Family History Salt Lake City
Mountain Meadows Association works to identify, remember, and  honor those killed in the Mountain Meadows Massacre of 1857
Utah Family History Centers a listing of LDS Family History Centers
Utah Genealogical Association
Utah German Genealogical Society
Utah Jewish Genealogical Society
Utah State Historical Society has good selection of online databases.

Additional Resources

Utah Obituaries enter your Utah ancestor's name to instantly search the world's largest newspaper archive; over 12 million newspaper pages
Utah Birth Records
Utah Marriage Records
Utah Divorce Records
Utah Death Records