This is a very interesting application for the ones who need an almost professional Contact Manager...
It is quite heavy, but I find it very flexible.
http://www.fonlow.com/OpenContacts/
What´s new?Essential Features:
Unlimited data fields to store any contact info. Along with preset fields, you may add unlimited data fields grouped by section.
Manage relationships between individuals, organizations and departments.
Comprehensive Categories. You may click on a category to view contacts of the category, or right click to list contacts of subcategories recursively.
Search through any data field, and search birthday of people.
Interact with Windows applications of telephony, Skype, emailing or Web/File browsing etc.
Map service with Google Maps. Uou may use either single line address or multi-line address.
Print contact info and labels with built-in functions or external label printing programs.
Import from MS Outlook, Outlook Express (WAB), Eudora, Netscape/Mozilla Thunderbird, XML (xCard), CSV, LDIF and vCard.
Export to indented text, CSV, Excel, vCard, XML (xCard) and HTML.
Attach photos and files .
LAN supports for multiple users in Local Area Network, using true Client/Server architecture.
Version 3.9.2
Import from LDIF files exported from address book of Mozilla/Netscape/Thunderbird. Previous method of importing CSV is obsolate.
Import from LDIF files exported from other data sources. You will then need to define your own mappings saved in XML.