GFS
- The Global File System, a shared disk cluster filesystem for Linux.
- http://www.redhat.com/software/rha/gfs/

JFS
- Open source Journalling Filesystem for Linux, from IBM. [GPL license]
- http://jfs.sourceforge.net/

Explore2fs
- Graphical Win32 explorer for Linux ex2fs partitions.
- http://uranus.it.swin.edu.au/~jn/linux/explore2fs.htm

Linux Streams (LIS)
- LiS is a software package that comprises an implementation of SVR4 compatible STREAMS for Linux. It takes the form of a loadable module for the Linux kernel.
- http://www.gcom.com/home/linux/lis/index.html

Linux romfs filesystem information
- Embedded read-only filesystem information and utilities
- http://romfs.sourceforge.net/

BeOS filesystem for Linux
- Tipps on installing and using the BFS filesystem.
- http://hp.vector.co.jp/authors/VA008030/bfs/

DTFS
- A Log-Structured Filesystem For Linux
- http://www.complang.tuwien.ac.at/czezatke/lfs.html

ReiserFS
- Journalling file system for Linux based on balance tree algorithms.
- http://www.namesys.com/

EFS
- Implementation of SGI's EFS for Linux 2.2.
- http://aeschi.ch.eu.org/efs/

CD Packet Writing Support for Linux (packet-cd)
- This page is the official home of the CD-RW packet writing patch for linux. This complements the udf drivers and will make using CD-RWs under linux a lot easier.
- http://packet-cd.sourceforge.net/