ENYOX  I have tried SyncTogether from Mark/Space and even Directory from Mac OS X Server 10.5 but none of those really did what I needed. And because I donīt wanted to pay for .mac or similar services and even more donīt want that my contact data is stored somewhere else Iīm very happy that I found Address Book Server. I installed the release from April 6th on Mac OS X Server 10.5.2 and itīworks great for me. Syncronization is very fast and even works with mixed Tiger and Leopard clients. The developerīs reaction time on support requests is super fast and he seems very ambitious to make the program even better. There is a free evaluation licence avaliable for 2 clients to test itīs functionality...  (Version 080406)

MREHAB  Installed ABS the December 2007 & March 2008 builds on a Mac Mini running Leopard Server.

ABS Dec build disabled file sharing. ABS Mar build disabled iCal server. The Dec ABS and client build shares AB contacts. I did NOT test ABS sharing with Mar build because of iCal server issue. Uninstalling ABS restored affected services.

ABS has promise, but should not disable features. Client uninstall is easy. Server uninstall, requiring unix command line knowledge, should be re-written to parallel client uninstall ease. Support only via email. ABS seems to function and beta testing should continue. I cannot, though, recommend ABS as a finished solution at this moment.  (Version 080227)