e2undel is an interactive console tool that recovers the data of deleted files on an ext2 file system under Linux. A library that allows you to recover deleted files by name is included. e2undel does not manipulate any internal ext2 structures, and it does not require any additional tools. It should be useable without knowledge of the ext2 interna.
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.
Panasync Tools provides a set of commands that enables version tracking among plain file copies. Retaining the basic functionality of standard copy commands, one can always track if a file has seen more updates than another file, and determine redundant or equivalent file copies. The approach is totally decentralized and serverless, and the functionality is achieved by small command-line user level programs that manipulate (by duplicating, comparing, joining and moving) any given file. By copying files with these commands users can detect if those files forgotten on disks or dispersed on different file systems and computers hold obsolete versions, and can thus be deleted, or need to be merged when depicting parallel updates. The updates, themselves can be done by any application since the system keeps a digest of the files to detect changes.
KDirStat (KDE Directory Statistics) is a small utility program that sums up disk usage for direcory trees, very much like the Unix 'du' command. It displays the disk space used up by a directory tree, both numerically and graphically. It is network transparent (i.e., you can use it to sum up FTP servers), and comes with predefined and user configurable cleanup actions. You can directly open a directory branch in Konqueror or the shell of your choice, compress it to a .tar.bz2 archive, or define your own cleanup actions.