For personal finance, YNAB (short for You Need A Budget) is a decent desktop and mobile application that can sync over Dropbox. It's pretty easy to use but not free - you have to purchase a license for $60. You can do a free evaluation month and it runs on Windows as well as Mac OS (plus iOS and Android for the mobile app that is free to download but only useable in conjunction with the desktop application).
You can find out more about it on http://www.youneedabudget.com/ - I have used it for more than a year and have had pretty good experiences with it for personal finances (specifically for making budgets and tracking where the money went).