Buxfer.com

You have to sign up to access to this website, which is a very small process. What you will have to do is after signing up; set your desired currency and you will be able to take control of your financial portfolio including budgets, IOUs and expenses. You can also manually add data like bank statements and credit cards.

You can also add expenses through your mobile device or computer on the move. The basic plan of this website which provides unlimited transactions & mobile access is completely free. Only the Pro and Plus versions are paid one.