Libsqlfs is a library used in conjunction with SQLite that allows applications to put an entire read/write file system into a relational database as a single file in the host filesystem. Such a filesystem-in-a-file can easily be moved around, backed up, or restored as a single file. The filesystem can also be accessed as individual files through FUSE (File System in User Space). This provides great flexibility and convenience. File system accesses can be batched into atomic transactions (either all the updates are done, or none of them are). Libsqlfs was created as part of the "ACCESS Linux Platform", and it will be useful in many other applications.
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.
MP3FS is a read-only FUSE filesystem that transcodes FLAC audio files to MP3 on the fly when opened and read. It is useful to enable the use of your FLAC collection with software and/or hardware that only understands MP3s. It is also a novel alternative to traditional MP3 encoder applications. Just use your favorite file browser to select the files you want encoded, and copy them somewhere.
Samba TNG is a tiny SMB/CIFS suite (server, client, and utilities) for Unix-like operating systems. This software is concentrating on MSRPC interoperability with Windows NT, 2000, XP, Vista, 2003, and 2008. Windows 7 support is in progress. It provides PDC support and tools to remotely administer NT servers and workstations.
Filelight graphically represents a file system as a set of concentric segmented rings (or nested piecharts), aiming to show where disk space is being used. Segments expand from the center, representing files and directories. The size of segments is proportional to the size of the files they represent. Directories have child segments which represent the files they contain. Filelight performs a similar function to the command line tool du, but all the information is shown in a compact graphical fashion.
Cromfs is a compressed read-only filesystem for Linux. Cromfs is best at archiving gigabytes of big files that have a lot of redundancy. It aims primarily at achieving a strong compression, even at the cost of memory and CPU time resources. It uses the LZMA compression algorithm from 7-zip and block merging.