NerdWallet reviewed more than 50 mortgage lenders, including the majority of the largest U.S. mortgage lenders by annual loan volume (measured among lenders with at least a 1% market share), lenders with significant online search volume and those that specialize in serving various audiences across the country. We rated them on criteria including rate transparency, loan types offered and more. Some of the providers are NerdWallet partners, but this did not influence our selection of the winner.