Linux

http://ovirt.org/ new project from redhat to provide management console for XEN, KVM [and everything that can be managed via libvirt]

http://www.cs.toronto.edu/~andreslc/xen-gl/ this is a new project from Utoronto. Hopefully it will be usefull in a near fetaure

http://wiki.xensource.com/xenwiki/XenWindowsGplPv Open-source windows para-virtualization drivers drivers for XEN.

http://tservice.net.ru/~s0mbre/old/?section=projects&item=netchannel Network channel is a protocol agnostic communication channel between hardware and userspace. Basically it allows very fast delivery from network hardware to userspace All protocol processing happens in process’ context.

http://tservice.net.ru/~s0mbre/old/?section=projects&item=unetstack it’s faster than standard in-kenrel implementation, but has limited featutures.

http://tservice.net.ru/~s0mbre/old/?section=projects&item=carp CARP is an improved version of the Virtual Router Redundancy Protocol (VRRP) standard. It has more features than Cisco’s HSRP. There is another[user-space] implementation called ucarp. This version does not compartable with OpenBSD CARP.

http://www.pikatechnologies.com/english/View.asp?x=608 asterisk appliance based on 400Mhz AMCC PowerPC. 1xFXS, 1x10/100Eth , expendable up to 8xFXO/FXS/BRI via modules. Sold with SDK and cross-compiler tool-chain

http://hostinghelp.biz/content/ddos-%D1%87%D1%82%D0%BE-%D0%B4%D0%B5%D0%BB%D0%B0%D1%82%D1%8C-%D0%B5%D1%81%D0%BB%D0%B8-%D1%81%D0%B5%D1%80%D0%B2%D0%B5%D1%80-%D1%82%D0%BE%D0%BB%D1%8C%D0%BA%D0%BE-%D0%BE%D0%B4%D0%B8%D0%BD-linux-%D1%81-apache article describes some recipes to counter DDoS using iptables limit and string matching filters. Useful

http://xgu.ru/wiki/Nettee see http://saf.bio.caltech.edu/nettee.html

http://debian.telenet.ru/adjustmentsoft/samba_pdc short how-to about configuring AD PDC using debain+samba+ldap+kerberos