Getting the best mortgage rate on your home or business is uber important, particularly now. As the markets fluctuate daily, mortgage rates seem to follow, begging the question: “Is now a good time to refinance my house? My condo? My business?” There are certainly oodles of local and regional firms out there who would love to help you refinance. And rest assured, there are an equal number of less-than-savvy lenders who would love to “help” you, too. So to help separate the wheat from the chaff, this list aggregates the top sites that offer genuine assistance with mortgage refinancing, including instant quotes, rate calculators, and information about the re-fi process itself.