Open Source WindowsNT and Linux file system software. Ntifs.h, Ext2fs_Rec NT Ext2 file system recognizer, SwapFs NT driver to use Linux swap partition, FileDisk is a virtual disk driver for NT that uses files to emulate physical disks.
A collection of utilities to access MS-DOS disks from Unix without mounting them. Supports Win'95 style long file names, OS/2 Xdf disks and 2m disks. With source code.
Hierarchical File System is the native volume format used on modern Macintosh computers. Hfsutils is a software package being developed to permit manipulation of HFS volumes from UNIX and other systems.
Tagsistant is a semantic filesystem for Linux/BSD kernels allows file management using tags. Files can be placed in directories which are tags and later retrieved with a query/path like: tag1/AND/tag2/OR/tag1/AND/tag3