NILFS is a log-structured file system supporting versioning of an entire file system and continuous snapshotting that allows users to restore files mistakenly overwritten or destroyed a while ago.
SwitchFS is a lightweight replacement for UnionFS, RAID and LVM.
SwitchFS (or SFS) is a lightweight file system layer designed to combine file systems located on multiple drives and/or multiple servers into a single logical file repository. SFS is built on top of FUSE (the "filesystem in userspace" layer).
YoutubeFS enables you to browse your favorite Youtube videos locally on your desktop without going to the youtube website. Just create a youtube account and add videos to your playlists, favorites list or subscribe to different channels. YoutubeFS then enables you to automatically load these videos to a local folder on your desktop. You can then view these videos (using a browser) as if they are local files.
Currently YoutubeFS works on Linux (Ubuntu 7.10) and Mac OS (Leopard 10.5.1)
goofs is a userspace filesystem which aims to expose Google services such as picasa images, contacts, blogs, documents, spreadsheets, presentations, etc. It is written using the python binding for fuse together with the python gdata api.
Java bindings for FUSE (Filesystem in USErspace) is a Java API that uses JNI bindings to FUSE library and enables writing Linux filesystems in Java language
JCIFS is an Open Source client library that implements the CIFS/SMB networking protocol in 100% Java. CIFS is the standard file sharing protocol on the Microsoft Windows platform (e.g. Map Network Drive ...). This client is used extensively in production on large Intranets.
Windows driver examples with free source code related to file systems, virtual disks and network communication from kernel mode. Published by Bo Brantén.
The NTFS-3G driver is an open source, freely available read/write NTFS driver for Linux, FreeBSD, Mac OS X, NetBSD, and Haiku. It provides safe and fast handling of the Windows XP, Windows Server 2003, Windows 2000 and Windows Vista file systems. Most POSIX file system operations are supported, with the exception of full file ownership and access right support.