Names change and here's where things stand currently.
The Hyperledger Project is basically a collection of blockchain technologies, contributed by various companies.
IBM's contribution to it is Hyperledger fabric (with a formal Gerrit repository), which was previously called Open Blockchain (OBC):
The fabric is an implementation of blockchain technology, leveraging familiar and proven technologies. It is a modular architecture allowing pluggable implementations of various function. It features powerful container technology to host any mainstream language for smart contracts development.