Although having only been using the iPhone 3G since July 2008, it has proven to become a tool I heavily rely on. Email, Calendaring, SMS, web access via Safari, etc. are great applications I use daily, but there are also several excellent applications in the iTunes App Store. Below are several I have found to be helpful, free, and worth the installation.

Mobile News – Free
FaceBook – Free
Clock – Free
Evernote – Free
Sportacular – Free
AOL Radio – Free
RDP Lite – Free
VNC – Free
SpeedTest – Free
Ping Lite – Free
Fring – Free
Holy Bible – Free
iTalk – Free
Google Earth – Free