Mint.com
I just found Mint while browsing the web the other night, and it looked very interesting. Mint offers all of your account information in one place (assuming they support your bank/credit card/investment firm/etc). At first, I was a little bit skeptical, did I want to turn all of my financial information over to them? After doing a bit of research, I found that Mint operates securely, not storing any of your username/password information, nor does it even have access to your account numbers. Mint basically just downloads transaction histories from all of your accounts for you.

Last night I imported all of my accounts and clicked around a little bit, so I really don’t have too much to share in terms of all the functionality, but just from the little bit of clicking that I did, I can tell you that Mint offers tons of functionality, so stay tuned for updates on my favorite features and functionality of Mint.

My one problem with Mint is that it doesn’t seem to support Firefox very well - At least not the Firefox 3 Beta.