Online banks have many benefits over standard, brick-and-mortar banks. They usually offer low--if any--fees for account services, rarely charge for online bill-pay, and offer many valuable services like the ability to view cancelled checks and transfer money easily between accounts for free. Some online banks are online-only, with no real address you can visit. Others are brick-and-mortar banks that offer online banking to customers. Here are the best things to look for in an online bank: no fees, plenty of online resources like transfers and check viewing, email reminders and budgeting tools. The number one online bank is currently WellsFargo.com, which offers all the resources you're looking for. Wells Fargo online banking offers bill pay, mobile banking, access to an online brokerage account, budget help, and check viewing. The next best online bank is Bank of America's online banking at bankofamerica.com. Enrolling with Bank of America is easy and gives you access to mobile banking, account statements online, free bill pay, check viewing, the ability to link your credit card and view a brokerage account, email alerts, and quick online transfers.