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An adaptable Linux workspace

30 free Linux tools for digital forensics

Need a parser, a recovery tool or a second way to check a result? The Acorn gives you room to use open-source Linux tools alongside its own applications.

Free software, not time-limited trials. No affiliate links or paid-upgrade editions are listed. The projects remain independent of SQFR; some maintainers also provide paid services. Their licences permit professional use, subject to their terms.

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These tools have Debian packages or an upstream Linux, Python or container installation route. That is not a claim that all 30 are preinstalled or tested in your Acorn build. Check the version and validate your intended use.

Acquisition

Guymager

Create EWF, AFF or raw forensic disk images through a Linux graphical interface.

Debian / Linux route: Debian package: guymager

Licence, source and examination note

Check source and destination identities before acquisition.

Licence: GPL v2 or later; bundled components retain their licences

Installation / package source · Licence terms

dc3dd

Acquire a raw image with forensic logging and hashing options.

Debian / Linux route: Debian package: dc3dd

Licence, source and examination note

A command-line acquisition tool. A reversed source and destination can destroy data.

Licence: GPL v3 or later; mixed supporting components

Installation / package source · Licence terms

dcfldd

Create raw copies with hashing, progress and split-output options.

Debian / Linux route: Debian package: dcfldd

Licence, source and examination note

Choose the required hash and retain the acquisition log.

Licence: GPL v2 or later; mixed supporting components

Installation / package source · Licence terms

libewf tools

Acquire, inspect, verify and export Expert Witness Format evidence images.

Debian / Linux route: Debian package: ewf-tools

Licence, source and examination note

The library and command-line utilities have different licence components; use the published copyright file.

Licence: LGPL v3 or later; see component notices

Installation / package source · Licence terms

xmount

Present supported evidence images through a virtual image view for other tools.

Debian / Linux route: Debian package: xmount

Licence, source and examination note

A virtual view is not a new verified acquisition. Check the output format and any write-cache settings.

Licence: GPL v3 or later

Installation / package source · Licence terms

Recovery

GNU ddrescue

Copy readable areas of a failing disk first and resume from a saved mapfile.

Debian / Linux route: Debian package: gddrescue

Licence, source and examination note

The Debian package is gddrescue. This is not the different dd_rescue program.

Licence: GPL v2 or later

Installation / package source · Licence terms

OpenSuperClone

Control imaging passes and recovery progress when a drive has read errors.

Debian / Linux route: Upstream Linux build or release .deb for the matching system

Licence, source and examination note

Upstream provides Linux build guidance and Debian packages. Direct controller access needs a suitable setup; not every USB bridge exposes it.

Licence: GPL v2

Installation / package source · Licence terms

TestDisk

Investigate lost partitions and damaged file-system structures.

Debian / Linux route: Debian package: testdisk

Licence, source and examination note

TestDisk also has repair functions that write to media. Examine a copy and do not select repair actions on original evidence.

Licence: GPL v2

Installation / package source · Licence terms

PhotoRec

Carve recognised file types from an image or device when directory records are missing.

Debian / Linux route: Debian package: testdisk

Licence, source and examination note

Included in the testdisk package. Carved files may lack original names, paths or complete content.

Licence: GPL v2

Installation / package source · Licence terms

Scalpel

Recover candidate files using configured header and footer patterns.

Debian / Linux route: Debian package: scalpel

Licence, source and examination note

A mature legacy carver. Review the selected signatures and validate recovered files.

Licence: GPL v2 or later

Installation / package source · Licence terms

Foremost

Carve file types using signatures and internal file structures.

Debian / Linux route: Debian package: foremost

Licence, source and examination note

A mature legacy tool. Carving is not proof of when a file was used or who used it.

Licence: Public-domain and GPL components

Installation / package source · Licence terms

Host records

The Sleuth Kit

Inspect partitions, file systems, deleted entries and file metadata from disk images.

Debian / Linux route: Debian package: sleuthkit

Licence, source and examination note

This entry covers the command-line Sleuth Kit, not a promise that the Windows Autopsy distribution installs on Debian.

Licence: CPL / IBM Public License and other component licences

Installation / package source · Licence terms

bulk_extractor

Find candidate email addresses, URLs and other features in data without relying on a mounted file system.

Debian / Linux route: Upstream Linux source build; C++ dependencies required

Licence, source and examination note

Features are leads. Retain offsets and inspect the surrounding source before interpreting a match.

Licence: GPL v3 or later for current project code; original US government material has separate status

Installation / package source · Licence terms

Plaso / log2timeline

Extract timestamped events from supported artefacts and prepare timelines.

Debian / Linux route: Upstream Linux container; Docker required

Licence, source and examination note

Use the project's Linux container or documented build route on Debian. Dependencies and parser coverage are version-specific.

Licence: Apache 2.0

Installation / package source · Licence terms

python-registry

Read Windows Registry hive keys and values in repeatable Python examinations.

Debian / Linux route: Upstream Python package in an isolated environment

Licence, source and examination note

A library for scripts, not a one-click interpretation of all Registry evidence.

Licence: Apache 2.0

Installation / package source · Licence terms

python-evtx

Read Windows EVTX event records on Linux for review or further processing.

Debian / Linux route: Debian package: python3-evtx

Licence, source and examination note

Use known samples and distinguish the stored event from its rendered description.

Licence: Apache 2.0

Installation / package source · Licence terms

RegLookup

Extract and search values from Windows Registry hives.

Debian / Linux route: Debian package: reglookup

Licence, source and examination note

A mature command-line reader. This link uses the maintained Debian package record because the historic upstream site has a certificate problem.

Licence: GPL v2 or later; see package notices

Installation / package source · Licence terms

DB Browser for SQLite

Inspect SQLite tables and run queries against working copies of supported databases.

Debian / Linux route: Debian package: sqlitebrowser

Licence, source and examination note

Preserve associated WAL and SHM files where relevant. The application can edit databases; protect originals.

Licence: MPL / GPL dual licensing; see source notices

Installation / package source · Licence terms

rifiuti2

Read Windows Recycle Bin metadata such as original paths and recorded deletion times.

Debian / Linux route: Debian package: rifiuti2

Licence, source and examination note

A Recycle Bin timestamp has a specific meaning; it is not every form of deletion.

Licence: BSD 3-Clause; package notices apply

Installation / package source · Licence terms

liblnk tools

Inspect Windows shortcut files for target paths, volume details and recorded metadata.

Debian / Linux route: Debian package: liblnk-utils

Licence, source and examination note

A shortcut is one record to corroborate, not proof that a file was copied.

Licence: LGPL v3 or later

Installation / package source · Licence terms

libevtx tools

Inspect and export Windows Event Log records using libyal's native utilities.

Debian / Linux route: Debian package: libevtx-utils

Licence, source and examination note

A separate implementation from python-evtx, useful when checking parser behaviour.

Licence: LGPL v3 or later

Installation / package source · Licence terms

Network

Wireshark

Inspect saved packet captures and follow protocol conversations in a graphical interface.

Debian / Linux route: Debian package: wireshark

Licence, source and examination note

Encrypted payloads do not become readable just because they appear in a capture.

Licence: GPL v2 or later; component notices apply

Installation / package source · Licence terms

tcpdump

Capture authorised network traffic or filter an existing packet capture.

Debian / Linux route: Debian package: tcpdump

Licence, source and examination note

Live capture needs suitable permissions and a defined collection scope.

Licence: BSD-style licences; see file notices

Installation / package source · Licence terms

Documents

ExifTool

Read metadata from photographs, video, Office files and many other formats.

Debian / Linux route: Debian package: libimage-exiftool-perl

Licence, source and examination note

It can also write metadata. Use read operations on evidence and interpret times and location fields in context.

Licence: Artistic License or GPL; see component notices

Installation / package source · Licence terms

Hachoir

Inspect binary file structures and extract metadata with Python-based parsers.

Debian / Linux route: Debian package: python3-hachoir

Licence, source and examination note

Parser support differs by format; keep the tool version with the output.

Licence: GPL v2

Installation / package source · Licence terms

oletools

Inspect Office documents for macros, embedded objects and other suspicious content.

Debian / Linux route: Upstream Python package in an isolated environment

Licence, source and examination note

Static indicators are not a malware verdict. Do not enable macros to inspect a document.

Licence: BSD 2-Clause with separate third-party notices

Installation / package source · Licence terms

pdf-parser

Inspect PDF objects, streams and references without opening the file in an interactive reader.

Debian / Linux route: Upstream Python 3 script on Debian

Licence, source and examination note

Use a contained analysis environment for suspect files. Do not execute extracted code.

Licence: Author-designated public domain

Installation / package source · Licence terms

PDFiD

Screen PDF structure for names associated with actions, scripts and embedded content.

Debian / Linux route: Upstream Python 3 script on Debian

Licence, source and examination note

A triage aid, not an antivirus scanner or a complete PDF parser.

Licence: Author-designated public domain

Installation / package source · Licence terms

libpff tools

Inspect and export records from supported Outlook PST, OST and PAB containers.

Debian / Linux route: Debian package: pff-tools

Licence, source and examination note

Review format support and preserve message metadata when preparing exports.

Licence: LGPL v3 or later

Installation / package source · Licence terms

Verification

hashdeep

Hash file sets and compare later copies with a recorded manifest.

Debian / Linux route: Debian package: hashdeep

Licence, source and examination note

A matching hash checks identical bytes, not the truth of a document or a person's identity.

Licence: Public-domain and GPL components

Installation / package source · Licence terms

Source and licence review: 24 September 2026. No software from this list was installed or run as part of the directory review. Package versions and upstream requirements can change.

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