Linux, in the tradition of UNIX-like operating systems, implements file system permissions using a rather coarse scheme. While this is sufficient for a surprisingly large set of applications, it is too inflexible for many other scenarios. For that reason, all the major commercial UNIX operating systems have extended this simple scheme in one way or the other. This is an effort to implement POSIX-like Access Control Lists for Linux. Access Control Lists are built on top of Extended Attributes, which can also be used to associate other pieces of information with files such as Filesystem Capabilities, or user data like mime type and search keywords.
The Parallel Virtual File System is a user-space parallel file system for use on clusters of PCs (and Beowulfs in particular). It provides transparent file striping across multiple machines and includes a loadable kernel module for use with existing binaries. TCP/IP is used for data transmission, and file data is stored on existing file systems on each machine.
Davenport is a Java Servlet-based application providing WebDAV access to an entire SMB network. This enables users to connect to Windows and Samba shares via WebDAV clients such as Mac OS X, Windows Web Folders, etc. or any Web browser. Workgroups are browseable, and users are authenticated against a domain. WebDAV clients can upload, download, create directories, etc. Non-WebDAV clients (i.e., "normal" Web browsers) can also access the network of shares and download files. When run over HTTPS, this application provides a reasonably secure means of accessing an internal Windows/Samba network over the Internet without requiring a VPN.
Chiron FS is a FUSE based filesystem that implements replication at the filesystem level like RAID 1 does at the device level. The replicated filesystem may be of any kind you want; the only requisite is that you mount it. There is no need for special configuration files; the setup is as simple as one mount command (or one line in fstab).
makebootfat is a tool to make bootable USB disks. It can autodetect, partition, format, and populate the USB disk in a single step without any user interaction. It can also create disk images which are simultaneously compatible with all the three USB booting standards: USB-FDD, USB-HDD, and USB-ZIP.
phpFileManager is a complete filesystem management tool in a single file. Features: server info, directory tree, copy/move/delete/create/rename/edit/view/chmod files and folders, tar/zip/bzip/gzip, multiple uploads, shell/exec, works on Linux and Windows, PHP4/5 and Apache2 compatible, and English and Portuguese support.