pynfs consists of several Python tools for NFSv4. rpc.py is an enhanced version of the rpc.py program distributed with Python. rpcgen.py is an RPC protocol compiler. nfs4lib.py is an NFS4 library for Python. nfs4client.py is a NFS4 commandline client. nfs4st.py is a server test application.
rfsdelta is a kernel module for the Linux 2.6 series that collects all filesystem inode changes (recursively) and reports them to a userspace process. It is similar to inotify, dnotify (but provides recursive notification, and only a single watcher process is allowed), fschange, fsevent, and rlocate (but also reports unlink(), rmdir(), and st_*). rfsdelta was based on the kernel module shipped with rlocate 0.5.5.
romfser is userland program for listing, extracting, and partially mangling romfs images. You can provide it with an offset in an image where the file system starts. The mangling ability is expressed in file substitution, where the new file has to be equal or smaller in size compared to the file being replaced. It can extract single files into the current directory or extract the whole filesystem while preserving the directory structure.
rootpretender is a system that enables special file operations such as the creation of block special and character special device nodes and unlimited chown()ing of files for non-root users of Unix systems. It does this by faking special file operations. For example, chown() is not executed, and mknod() creates regular files instead of device nodes. These operations are remembered, so next time a process under rootpretender's control examines an affected file with stat() or a similar system call, the fake information is returned. It uses LD_PRELOAD and includes patches for rsync 2.6.6 and rsync 2.6.9 for use on systems without LD_PRELOAD support. These make it possible to copy file ownership and device nodes even if root access is not available on the target.