There are several websites that can help you manage your money online.
My two dollars has a good list of websites that can help you do it. But the best website (and the #1 in
My two dollars post) is
Mint. If you're like me and you have several bank account and several credit cards,
Mint is the best place to manage and view them all. Now that Mint has information about your property and loans, there is no need for you to go to any other site.
Spend wisely :)