From The Sun's Financial Diary's Online Bank Interest Rates History. When this page is initially loaded, the banks with the top three rates are shown. Try to avoid adding too many to compare, it gets crowded quickly. As of this visualization's creation, the top three have zero name recognition for me, and I probably wouldn't bank with them no matter how much higher the APY is than a more well-known banking establishment. But that's the risk of internet finance, isn't it.

I have no business relations with any of these entities, though I may or may not be a customer of some of the large ones through other means. I definitely have an online savings account with one, which is one of the reasons I built this.