MyHeritage - Family tree, DNA & ancestry search

Founded in 2003 in Israel, this company is a leader in DNA and genetic testing. They are well known for having very accurate testing and are well regarded in the space. 

They suffered a data-breach a couple of years ago, the company began using 2-factor authentication, so it would appear that they learned their lesson.  MyHeritage gives users a look at some of the raw information about their genetic makeup, and it represents a top tool in family tree research.