mTouchLabs has introduced iPhone SMS Backup, an application for Mac or PC that allows you to copy text messages (SMS/iMessages) from your iPhone directly to your Mac.
The software is able to convert the SMS database in Excel, CSV and HTML formats, offering the possibility to browse them from your computer using any application like a text editor or Microsoft Excel. You can sort your messages based on multiple criteria, leveraging the sorting feature of a tabular format.
iPhone SMS Backup requires a Mac with 10.6 and above or Windows PC with XP,vista,7 or 8, as well as iTunes. A free demo is available for download (http://iphonesmsbackup.com). Registration is USS$4.99.
iPhone SMS Backup can be downloaded for free of cost. Full version is available at $4.99 (USD).