SMSNotify keeps your iPhone vibrating when there’s an unread SMS.

Buxfer, like Mint, is a personal finance site… not too interested in those, but this one has a mobile phone interface and an iPhone-specific interface for accessing your account remotely. You can also use Twitter or SMS to get account balances and other information. Truly web 2.0. [ via Ajaxian ]

This application lets you view, save, and back up your SMS messages.