Spec URL: http://miskatonic.cs.nmsu.edu/pub/protobuf.spec
SRPM URL: http://miskatonic.cs.nmsu.edu/pub/protobuf-2.0.0-0.1.beta.fc9.src.rpm

Description: 

Protocol buffers are a flexible, efficient, automated mechanism for serializing
structured data – think XML, but smaller, faster, and simpler. You define how
you want your data to be structured once, then you can use special generated
source code to easily write and read your structured data to and from a variety
of data streams and using a variety of languages. You can even update your data
structure without breaking deployed programs that are compiled against the
"old" format.