The Linux distributor Collax has updated its Open-Xchange server groupware product to version 5.1. Besides the basic system several services were also updated.
Open source groupware tools have come of age. You are no longer limited to email and an address book. Some of these tools surpass the commercial alternatives – once you get them installed.
IBM has now released the new version of the Lotus Notes Groupware and Collaboration Suite for Linux servers. Besides numerous enhancements and a new, Java-based architecture, the Red Hat Enterprise Linux 5 now provides a Linux distribution-based platform for the server.
Leafnode is a Usenet server for small sites where just a few users need access to a large number of groups. The Leafnode server is designed to recover from errors autonomously and needs very little attention.
Look here for archived tutorials and talks from USENIX Security '08. Each comprises a video and recorded presentation slides which are shown parallel to the talk.