Google Contact manager has existed as a part of Gmail but now it is available as standalone application. You can store and manage your online contacts even if you don’t use Gmail. It allows you to add multiple email, phone or home addresses and even adjust chat preferences for your contacts.
You can import your contacts from other sources or export the ones you have currently. You can easily manage and share contact while using various services like: Google Docs, Picasa, Google Calendar etc. Google Apps users can access Google Contact manager at http://www.google.com/contacts/a/example.com (where example.com is your domain).
However, for above your administrator will have to enable this functionality within the control panel by clicking on the “add more services” link, finding the “Contacts” option and clicking the “add it now” button. Testdrive Google Contact Manager to manger your contact online. [via]