In the original Practical Byzantine Fault Tolerance (PBFT) paper they mention they implemented a fault tolerant NFS service. To do that they made a library for PBFT. Does that exist anywhere?
As that paper is quite old now and was well received, I thought it should not be hard to find implementations. However so far I only found incomplete and abandoned experiments.
RAFT has a list of implementations on their website. I am looking for something like this in the byzantine case.