nfstimesync is a tool for synchronizing the time of an NFS server and client without root rights. It was developed to allow the "make" program work correctly with NFS.
pynfs is a suite of several Python tools for NFS4, useful for testing purposes. Its primary components are a server tester, useful for testing server response to unusual error conditions and/or a badly behaving client, and a functional memory-based server written in Python, which will be the base of an eventual client tester.
Volume Sharing Manager
Vsman is a utility that has been designed for volume (directory) sharing management on the server side. So far, it only manages NFS v3, but can be extended to others volume sharing systems.