FCorp ID Book!

Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.

EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.

FullContact's apps let you keep all your contacts in one place, automatically up-to-date. This social contact management software automatically cleans your contacts, enriches them with social profile data, and continually syncs them across devices with all your contact sources. You can also merge duplicate contacts, scan business cards, capture email signatures, and more.

KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news, and email. It uses KParts to embed the various applications (KMail, KAddressBook, Akregator, etc.) into the container application.

This app replaces the stock dialer and contacts manager on Android devices. It's a sophisticated, feature-rich contacts manager that includes social network integration for your contacts (Facebook, Twitter, Linkedin & Foursquare). It also can send FREE and regular SMS, in addition to many other features.

Total Text Container is a personal information manager that lets you to store all kinds of different content within a single encrypted XML database, including rich text, images, spreadsheets, URLs/passwords, contacts, calender events, catalogs, files etc. Each item in the database is capable of supporting a mashup of content types, so you can store and view all related information on the same page easily.

With Free Address Book - Free Phone Book you can note the addresses, phone numbers, mobile, fax, company name, country, city, website address and email addresses of your contacts and partners.

do-Organizer includes useful tools to improve your experience and qualify you as an achiever. Store valuable information with a versatile, elegant, and customizable data manager. Creatively highlight information with a huge library of quality clipart, icons, and pictures that will enhance every presentation.

Syncs contact between various third-party services and helps to clean them up and merge data.

E-Z Contact Book is a free easy to use yet powerful Windows program to store and manage contact information. You can use it as a business directory, customer database, or a personal contact address/phone book.

es-Builder is a flexible, customizable, friendly, powerful and unique database manager for private personal use.

Address book program providing unified, flexible and simple interfaces for you to manage and lookup contact info of people and organizations.