Ancestry.com is NOT owned by the Mormon Church. It is is based in Provo, UT. The founders were Mormons but the Company is not affiliated with that church. In fact, in 2009 it became a company listed on the NASDAQ. As such, it files reports with the SEC. The name of the company is ANCESTRY.COM LLC.
Familysearch.org is owned by the Mormon Church.
Familysearch.org is owned by the Mormon Church.