familysearch.org is incredible. My previous bishop (a Bishop in the Church of Jesus Christ is essentially a pastor; bishops are unpaid volunteers) worked for Family Search in their engineering department. It most certainly costs millions to operate, and is being extremely actively developed. Last I heard they’re using machine learning to index obituaries from old newspapers so that people could find records of their ancestors more easily. Pretty incredible stuff.

Try taking a look at Family Search. It’s so cool.