MobileHelp is a strong application on Nokia S60 3.0 platform. It have lots of functions:
Search for contacts by keywords (company, notes, title etc), time, and number.
Back up SMS messages.
Secrete SMS.
Quickly find all of the phone call records for a specific contact.
Quickly find all of the messages for a specific contact
Unyverse Contacts - Manage your contacts from your web browser and get them automatically on your phone. Type in some contact information in your mobile when you meet someone, and it is automatically uploaded to your unyverse web account. With Unyverse Contacts, your contacts are always in sync between your mobile and your web account
Group Creator is a small freeware that reads the mobile phone contact list and group them according to the settings. There are group rules by company, city, country, family name, note and job title. Group Creator uses the group functionality in the phone book to organize your contacts by adding them to existing groups
Mail for Exchange is a client application for Nokia Eseries and Nseries that allows you to synchronize your phone with Microsoft Exchange servers. You can synchronize emails, contacts, calendars and tasks. It supports Microsoft ActiveSync protocol that is available in Microsoft Exchange Server 2003 or later
Mobile Reader is a software device to extract text information through mobile image processor and OCR engine after analyzing the image taken by the digital camera on celluar phone or PDA
ABBYY Business Card Reader 2.0. is a handy application for Nokia smartphones which allows users to quickly and easily capture contact information from business cards and add it to the mobile address book together with a photo of a given contact person
VITO QuickContact is a very useful application that helps manage your contacts and call history. The best feature offered by this appliacion is that it facilitates one-hand usage. So, its a very attractive package for people who wish to maintain their call details and contacts on-the-go
FreeCaller is an open source symbian application for Nokia S30v3 phones, that displays a full screen caller photo on incoming calls. It uses pre-attached photos, and its own incoming call screen, that replaces the native nokia "bubble". The screen displays a full scale photo of the caller, its name and phone number
Listcaller software allows you to call many contacts one after another and at the same time to make other work, for example read a book, work on the computer or drive a car. All what you need is S60 smartphone and a garniture of any type