Are you worried about your private contacts being seen by others? Have a 'LockOnContacts' installed in your phone to lock all your contacts. Once locked these contacts can be viewed only by entering correct password
QRbCard - Have you ever been puzzled with how to store all your business card information into your boasted, favorite, camera enabled mobile phone cause you are a slow phone keyboard typist? DigFace bCard provides a 2D BarCode (DataMatrix or QR Code) Card solution for you. Easy to use. No more phone keyboard typing
Manage all your customer information in one place. Wizards make data entry quick & easy. Import existing Customers from your phone. Find everything fast: Search by customers, contacts, & tasks
Advanced phone book search application, capable of searching for phone numbers or number patterns and also contacts name patterns. All integrated to a very simple interface, QFind is undoubtedly a must have on any java supported phone
Birthday Manager - Lists the contacts you have with a birthday saved. And allows you to add your own contacts (for phones that don't support reading the birthday value).
You can see how old someone will be and home many days till there birthday.
You can filter and sort the list in quite a few ways
The utimate contact manager for your phone: iPhone like interface, quick search, one click call, groups and web account contact management, Google maps integration and backup to easily import your contact list
Papaya - What can you do with Papaya? Papaya backs up your phonebook quickly and easily. No more lost contacts! Once your phonebook is backed up, you can access it from your phone or from the web. You can also synchronize your original phonebook with the Papaya phonebook anytime. Papaya makes it super easy to manage your contacts
Save Phonebook S60 - The program for creating backup copies of your phone book. The program creates a text file phone_bk.txt, which can then be copied to a computer, print, etc. To save, choose the folder where you have write permission