Online Finance/Budgeting Software for Couples?

I know you mentioned you were looking for free online software options, but I'd recommend Green Sherpa. While there is a small monthly fee for the site (con), it offers tools that Mint, Quicken, etc. don't such as the ability to set financial goals for yourself and track your progress towards those goals (pro), easily input one time expenses into your finances (pro), and communicate with others who are a part of your financial picture such as your spouse or CPA (pro).