Xprobe-NG announced for July 2009
xprobe: Remote OS identification using ICMP packets Xprobe allows you to determine what operating system is running on a remote host. It sends several packets to a host and analyses the returned ICMP packets. The tool automates a logic of OS fingerprinting methods called "X"
The release of Xprobe-NG, aka Xprobe2++ is scheduled on 7 of July After we present our tool at DSN 2009 . Meanwhile, if you want to test current bleeding edge code, please use instructions bellow to sync with GIT repository. Please also keep in mind that there might be some delay with developers "pushing" their repositories to the sourceforge site.
git clone git://xprobe.git.sourceforge.net/gitroot/xprobe