Quagga is a routing software suite, providing
implementations of OSPFv2, OSPFv3, RIPv1 and v2, RIPng, IS-IS,
and BGP4+ for Unix platforms, particularly FreeBSD,
Linux, and NetBSD.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
The primary focus of this release is a fix of a SEGV regression in ospfd, which was introduced in 0.99.19. It also features a series of minor improvements, including better RFC compliance in bgpd, better support of FreeBSD, and some enhancements to isisd.