Description:

The Sleuth Kit (previously known as TASK) is a collection of
UNIX-based command line file system forensic tools that allow an
investigator to examine NTFS, FAT, FFS, EXT2FS, and EXT3FS file
systems of a suspect computer in a non-intrusive fashion. The
tools have a layer-based design and can extract data from internal
file system structures. Because the tools do not rely on the
operating system to process the file systems, deleted and hidden
content is shown.

When performing a complete analysis of a system, command line
tools can become tedious. The Autopsy Forensic Browser is a
graphical interface to the tools in The Sleuth Kit, which allows
one to more easily conduct an investigation. Autopsy provides case
management, image integrity, keyword searching, and other automated
operations.