Marco Barisione and myself worked on some plugins to extend the N900’s Contacts application. I grouped them in the fremantle-contacts project on gitorious. You can find on the project wiki page a short description of what we have already. Here is an overview:

Contacts Merger

Plugin to find probable duplicate contacts and allow the user to easily merge them.

Available in extra-devel maemo repository, package name: “contacts-merger”

Extended Contacts Search

Plugin to extend the live search feature on addressbook’s main view. It will also search in contacts phone numbers, nickname, emails and IM usernames.

Available in extra-devel maemo repository, package name: “extended-contacts-search”

Contact Zoom

Plugin to add a Contact Zoom menu option it Contact starter view. The Contact Zoom opens a window with all information about that contact displayed in bigger font, to make it much more readable.

Available in extra-devel maemo repository, package name: “contact-zoom”