Quicken Online is now free.
This is the online version of the ever popular Quicken finance software from Intuit.
Quicken Online was introduced earlier this year, but up until this week there was a monthly subscription fee to use the service. Intuit has removed the fees to bring Quicking inline with the competition, such as Mint.com and others.
You should try a few similar online services to find out what works best for you.