From the press release: Unbound – a new open source alternative to the BIND domain name system (DNS) server– makes its worldwide debut today with the worldwide public release of Unbound 1.0 at http://unbound.net.

Released to open source developers by NLnet Labs, VeriSign, Inc. (NASDAQ: VRSN), Nominet, and Kirei, Unbound is a validating, recursive, and caching DNS server designed as a high performance alternative for BIND (Berkeley Internet Name Domain). Unbound will be supported by NLnet Labs.

It is good news for the Internet as a whole there is another alternative to the venerable Bind. With a 75% market share, this means an exploit in Bind might cause serious trouble for a lot of people. With more alternatives, we mitigate the risk.

I have not tried it yet and certainly my experience on this small site will certainly not be representative. If you want to give it a try, download the source from http://unbound.net

I built RPMs for RHEL5 / CentOS 5 (WARNING Totally untested ! use at your own risk)

unbound-1.0.0-1.i386.rpm
unbound-1.0.0-1.src.rpm

See also the static page with more details for geeks.

Update: I have been using this RPM over the last two hours in lieu of Bind for local resolving and can report it works as intended