The Xen Orchestra open-source software that provides a web GUI to Xen Server and the XAPI is out with a significant update.
Xen Orchestra 3.4 was released today and its two principal new features include a sign-in page requirement and an end-to-end event system. The sign-in page allows for additional security while the new event system is more reactive, utilizes less bandwidth, is more CPU efficient, and offers much greater scalability. The new event system should be a big performance win for Xen Orchestra.
Those interested in more information on the Xen Orchestra 3.4 release can find out all of the details and download the software via Xen-Orchestra.com