PTK is an alternative advanced interface for the TSK suite (The Sleuth Kit). The software is a free interface developed in order to improve the features already present in ‘Autopsy Forensic Browser’ (the former TSK interface).
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The Sleuth Kit and Autopsy Browser are UNIX open source digital forensic analysis tools, based on The Coroner's Toolkit, used to examine NTFS, FAT, FFS, EXT2FS and EXT3FS files.