libburnia is a project comprised of libraries and binaries for reading, mastering, and writing optical discs. It provides libburn, a CD/DVD/BD burn library, libisofs, a manipulation library for ISO 9660 filesystems, and libisoburn, a ISO 9660 multi-session library. On top of them there is cdrskin, a cdrecord emulator, and xorriso, a all-in-one application for ISO 9660 multi-session operations which additionaly provides a limited emulation of mkisofs.
cryptmount is a utility for creating and managing secure filing systems on GNU/Linux systems. After initial setup, it allows any user to mount or unmount filesystems on demand, solely by providing the decryption password, with any system devices needed to access the filing system being configured automatically. A wide variety of encryption schemes (provided by the kernel dm-crypt system and the libgcrypt library) can be used to protect both the filesystem and the access key. The protected filing systems can reside in either ordinary files or disk partitions. The package also supports encrypted swap partitions, and automatic configuration on system boot-up.
fio is an I/O tool meant to be used both for benchmark and stress/hardware verification. It has support for 13 different types of I/O engines (sync, mmap, libaio, posixaio, SG v3, splice, null, network, syslet, guasi, solarisaio, and more), I/O priorities (for newer Linux kernels), rate I/O, forked or threaded jobs, and much more. It can work on block devices as well as files. fio accepts job descriptions in a simple-to-understand text format. Several example job files are included. fio displays all sorts of I/O performance information, including complete IO latencies and percentiles. Fio is in wide use in many places, for both benchmarking, QA, and verification purposes. It supports Linux, FreeBSD, NetBSD, OS X, OpenSolaris, AIX, HP-UX, and Windows.
GNU xorriso creates, loads, manipulates, and writes ISO 9660 filesystem images with Rock Ridge extensions. Files can be copied in and out. The session results get written to optical media or to filesystem objects. Rather than needing external tools for ISO 9660 production and CD/DVD/BD burning, it is a static compilation of libburnia-project.org. Thus GNU xorriso depends only on fundamental operating system facilities.
hfsutils is a comprehensive software package being developed to permit manipulation of HFS volumes from UNIX and other systems. HFS is the ``Hierarchical File System,'' the native volume format used on modern Macintosh computers. The software reads and writes HFS (but not HFS+) volumes with several command-line programs and optionally an X interface. The software can also be used as a C library.
Virtualfs provides a set of plugins and let you define new ones. Each plugin may intercept and enhance file system operation. Various plugins are already done, including remote device access for Xterminals (to access the floppy, CD, and sound cards with standard applications), auto-mounter (browse and automount your SMB shares), access control lists, etc.
The Extended Universal Resource Locator library provides a complete virtualization of file-like objects. How data is stored is completely transparent to the client, since the library is meant to replace java.io.File. It provides implementations for handling local files, Jar/Zip archives, and XML documents. (Implementations for CVS and FTP are available seperately.) Other storage providers can be written and plugged in. It also provides a merged filesystem implementation that allows multiple hierarchies to appear as one and to override each other in a controlled way. Other features include notification of changes to files, and support for attaching (dynamically updatable) actions to file objects.