Contactzilla's integration makes it very easy to import all of your clients into an address book that you can then share with your team. We've found it especially good for getting a clean centralised address book started very quickly.
Also Roan Lavery, founder of FreeAgent had this to say about Contactzilla:
"ContactZilla looks great and the integration seems to work well too"
Tom and I have been big fans of FreeAgent for years. You can even see me on their case studies page from years ago! So this means a lot.
Thanks again guys.