There are many applications available for your Nokia Series 60 mobile phones. Some of them are must-have applications, few are generic, and the others are the one that you do not want to see at all.
i have listed some most usefull apss for symbian mobiles check them
Nimbuzz is a free messaging application for your mobile phones. With this application, you can import popular networks like Yahoo, Facebook, Google Talk, MySpace, etc. and connect with your friends to share the information.
4.Opera mini and Opera mobile
best internet browsers
very usefull to download large files on device
6.xplore and y browser.
as many symbian phones doesnt have stopwatch
8.ttpod (music player)
it is like need of symbian used in many apps
download torrents to ur phone directly
these all softwares are free to download and can be downloaded from sites ......