Quagga is still beta software and there is no officially released version. Once Quagga is released you can get it from gnu FTP site and its mirror sites. We are planning Quagga-1.0 as the first released version.
Zebra's official web page is located at:
http://www.gnu.org/software/zebra/zebra.html.
The original Zebra web site is located at:
As of this writing, development by zebra.org on Zebra has slowed down. Some work is being done by third-parties to try maintain bug-fixes and enhancements to the current Zebra code-base, which has resulted in a fork of Zebra called Quagga, see:
for further information, as well as links to additional zebra resources.