COPTR - User contributions [en-gb]

Hex Fiend

2026-02-05T16:43:47Z

Kieranjol: Created page with '{{Infobox tool |purpose=Hex Editor for MacOS. |homepage=https://hexfiend.com/ |tool_status=Maintained |sourcecode=https://github.com/HexFiend/HexFiend |license=BSD-2-Clause li...'

{{Infobox tool
|purpose=Hex Editor for MacOS.
|homepage=https://hexfiend.com/
|tool_status=Maintained
|sourcecode=https://github.com/HexFiend/HexFiend
|license=BSD-2-Clause license
|cost=Free
|platforms=MacOS
|function=Access, Forensic, File Recovery, Binary & Hexidecimal Editing
|content=Binary Data
}}
{{Infobox tool details}}
== Description ==
Hex Fiend is a useful free, open source GUI tool for hex editing files.
== User Experiences ==

Brunnhilde

2026-02-05T16:35:24Z

Kieranjol: /* Activity Feed */

{{Infobox tool
|image=Brunnhilde.png
|purpose=Siegfried-based characterization of directories and disk images
|homepage=https://github.com/tw4l/brunnhilde
|license=MIT License
|platforms=Linux, macOS, OS X
|function=Content Profiling, Metadata Extraction, Appraisal
}}
{{Infobox tool details}}
== Description ==

Brunnhilde is a command-line utility that runs Siegfried against a specified directory or disk image, loads the results into a sqlite3 database, and queries the database to generate reports to aid in triage, arrangement, and description of digital archives. The program will also check for viruses unless specified otherwise, and will optionally run bulk_extractor against the given source. Reports include CSVs, a tree report, and a human-readable HTML summary of the directory or disk image. All outputs are placed into a new directory named after the identifier passed to Brunnhilde as the last argument. Brunnhilde is also capable of exporting files from logical disk images utilizing many file systems, including HFS+.

Dependencies include Python (tested in 2.7 and 3.4+), Siegfried, ClamAV, bulk_extractor, Sleuth Kit, and HFSExplorer. All dependencies already installed and compiled in the BitCurator environment.

To install the command-line utility with pip: "pip install brunnhilde".

For a GUI wrapper for Brunnhilde, see the [https://github.com/tw4l/brunnhilde-GUI Brunnhilde GUI Github repo].

== User Experiences ==

* '''DPC blog post by Niamh Murphy on the installation of Brunnhilde:''' https://www.dpconline.org/blog/blog-niamh-murphy-brunnhilde-installation
* '''DPC blog highlighting various use cases of Brunnhilde in workflows:''' https://www.dpconline.org/blog/wdpd/blog-niamh-murphy-wdpd2024

== Development Activity ==

All development activity is visible on GitHub: http://github.com/tw4l/brunnhilde/commits

=== Release Feed ===
Below the last 3 release feeds:
<rss max=3>https://github.com/tw4l/brunnhilde/releases.atom</rss>

=== Activity Feed ===
Below the last 5 commits:
<rss max=5>https://github.com/tw4l/brunnhilde/commits.atom</rss>

Brunnhilde

2026-02-05T16:29:57Z

Kieranjol: /* User Experiences */

FTK (Forensic Toolkit)

2026-02-05T15:58:26Z

Kieranjol: Removes references to AccessData and updated with Exterro URL

{{Infobox tool
|purpose=Forensic Toolkit
|homepage=https://www.exterro.com/digital-forensics-software/forensic-toolkit
|function=Forensic
|content=Disk Image
}}
{{Infobox tool details
|ohloh_id=Forensic Toolkit (AccessData)
}}
= Description =
Forensic Toolkit

= User Experiences =
[https://groups.google.com/forum/#!topic/digital-curation/5hCOY0bMTX4 Discussion of the pros and cons of the free FTK Imager versus the commercially licensed and full featured FTK].

= Development Activity =

About COPTR

2026-02-05T15:46:53Z

Kieranjol: Fixed formatting issue

__NOTOC__
COPTR is a wiki based registry of digital preservation tools and workflows. It's main aim is to help practitioners discover preservation tools that might help them tackle particular preservation challenges. It can be browsed and searched directly by practitioners, or queried by other systems via an API.

Each tool in COPTR is categorised by the [[Lifecycle Stages|Lifecycle Stage]] it falls within, the (sub) [[Tool Functions|Function]] it performs and by the [[Content Types|Content Type]] that it operates on. It may also input and/or output specific [[File_Formats|file formats]]. For example, [[EpubCheck]] performs the Function [[Validation]], it operates on [[EBook]] Content and has [[EPUB]] as an input format. COPTR can help by enabling you to browse to tools that meet a particular need - perhaps relating to a specific [[Content Types|Content Type]] or [[Tool Functions|Function]].

COPTR also holds [[Workflow:Community_Owned_Workflows|digital preservation workflows]]. Sharing a workflow is a great way to exchange digital preservation practice and enable conversations around tools and how they are used.

[[Video guides to using COPTR|Watch these videos to find out more about how to use, and how to contribute to, COPTR]].

==How can I get involved?==
COPTR is a wiki, which means anyone can edit it and your contributions are very welcome. All changes are tracked, so if a mistake is made, it can easily be undone. So don't hold back - please dive in a help make the information in COPTR better.
Editing this wiki requires a user account, but due to problems with spam, you have to get in touch with us to request an account. Just email [mailto:coptr@openpreservation.org coptr@openpreservation.org] with your preferred username and we'll get you sorted. If you have any problems accessing your account, or want to report any spam, you can use the same contact email to request help.
Here are some suggestions:
*[[Add a tool to COPTR|Add a new tool to COPTR]]. Add a tool you're familiar with or check out this [[Wish list of tools to add to COPTR|wish list of tools to add to COPTR]].
*[[Contribute your workflow to COW|Add a new workflow to COW]]. It doesn't have to be a finished workflow - a draft or proposal is still useful!
*Correct or add more detail to existing entries - use the "Edit with form" option to do this. For example, you could:
** Check the [[:Category:Tool Status|Tool Status]], especially [[:Category:Unknown_Tool_Status|where the status is not known]].
** Flag1 or fix up outdated details, like broken URLs.
** Flag1 or remove text that does not meet the editorial guidelines (see ''Scope'' below).
** Add input or output formats. Ask for help (see below) if you need to create new [[File_Formats|File format]] entries.2

Beyond using, adding and updating the contents, you can also get involved by helping sustain and grow COPTR itself. Please take a look at the sustainability and governance sections below!

1Need to add some guidance on how to flag these cases.

2Can this be made easier?

==What is the scope of COPTR?==
COPTR captures basic, factual details about a tool, what it does, how to find more information (relevant URLs) and references to user experiences with the tool. The scope is a broad interpretation of the term "digital preservation". In other words, if a tool is useful in performing a digital preservation function such as those described in the OAIS model or the DCC lifecycle model, then it's within scope of this registry.

*In scope: Characterisation, visualisation, rendering, migration, storage, fixity, access, delivery, search, web archiving, open source software ->everything inbetween<- commercial software.
*Out of scope: Digitisation, file creation

Crucially, the goal of COPTR is to help you find tools to try out, not tell you what tools to use. The right tool often depends on your specific context and goals. By linking tools to user experiences, workflows, and other records of practice, we hope it will be easier to find out what others are doing, and that this will help you evaluate what you need.

Beyond tools, there are a number of other 'registries' that are related to COPTR and interlinked with it such as the [http://fileformats.archiveteam.org/ Just Solve The Problem File Formats Wiki] for detailed file format information, and the [https://www.nationalarchives.gov.uk/pronom/ PRONOM] format identification registry. You can find more resources and registries on the [https://github.com/digipres/awesome-digital-preservation?tab=readme-ov-file#readme Digital Preservation Awesome List].

==Why does COPTR exist?==
The digital preservation community had created a whole host of different tool registries that described preservation tools. Many people had also written blog posts about tools or organisations hosted web pages with lists of tools that tackled particular areas. There was lots of duplication between these lists and registries, but at the same time, each one often held tools that weren't described elsewhere. COPTR was built by bringing together and rationalising these other registries and lists. It was originally created in 2012 as a small activity within the Jisc funded [http://wiki.opf-labs.org/display/SPR SPRUCE Project] ([https://www.dpconline.org/digipres/collaborative-projects/completed-projects/spruce more info]), and has been significantly developed since - most notably with an upgrade to Semantic Mediawiki in 2021.

It was inspired by the original [http://digitalpowrr.niu.edu/ Preserving digital Objects With Restricted Resources project (POWRR)] Tools Grid and developed in partnership with the POWRR Project.

==Governance==
Currently COPTR does not have a community governance process in place.

It is supported by the Open Preservation Foundation (OPF) and the Digital Preservation Coalition (DPC), who cover the basic aspect of hosting the service, taking backups, removing entries that are clearly off-topic spam or abusive. Other issues, such as guidelines or processes around content quality, scope, review (see e.g. responding to [[Talk:Main_Page| Main page/discussion]]) or major service changes (e.g. shifting to other platforms, or dealing with the sustainability issues outlined below) are not covered.

The staff of the OPF and DPC are not the target users for COPTR, so we would like to encourage community members who care about COPTR to help us find a way to improve this situation. Please join us or get in touch via [[#Contact.2C_feedback_and_questions|the contact details below]]!

==Sustainability==

COPTR is stable, but has some sustainability issues. [https://github.com/orgs/digipres/discussions/66 Please see the full details in this statement on the service status and sustainability.]

==Technical stuff==
*[[Data structures in COPTR]] - information on the COPTR data model and its maintenance
*[[How COPTR Works]] - information on the technical setup of COPTR
*How to use the [[Using the COPTR data feed|COPTR data feed and API]]
*[[Development plans]]

==Organizational Contributions==

Organisations who would like to contribute the contents of their tool registry to COPTR should:

*Merge your own tool registry data with the new community registry (COPTR can help with this)
*Remove your own registry and agree not to set up any new project owned registries/lists
*Link to COPTR or expose the COPTR data by utilising the COPTR data feed
*Contribute any effort you have in adding new tools over time, to the community registry

COPTR is aiming to concentrate information about digital preservation tools in one place, keep the information in the registry maintainable and current by pooling the community's effort in one place, and avoid the emergence of new registries.

==Contact, feedback and questions==
Email [mailto:coptr@openpreservation.org coptr@openpreservation.org] if you have problems using the service, e.g. making sure you have a user account that works.

You can use [[Talk:Main_Page| Main page/discussion]] or [https://github.com/orgs/digipres/discussions the DigiPres.org GitHub discussion forums] to provide open feedback or raise questions or issues with the service.

If you'd like some support, or you're just curious about COPTR, please consider joining the [https://dpconline.org/digipres/pr-sig Preservation Registries Special Interest Group (PR-SIG)] and coming along to one our online ''Collaboration Café'' calls.

==COPTR Partners==
COPTR was created and launched with the support of the [http://www.educopia.org/events/ANADPII Aligning National Approaches to Digital Preservation] initiative and has been populated and maintained by members of the COPTR partner organisations:
<gallery heights=90>
File:DCClogo.png|[http://www.dcc.ac.uk The Digital Curation Centre (DCC)]
File:DCElogo.gif|[http://digitalcurationexchange.org/ The Digital Curation Exchange (DCE)]
File:DPCLogoSquare.png|[http://dpconline.org/ The Digital Preservation Coalition (DPC)]
File:nde-logo.png|[http://www.netwerkdigitaalerfgoed.nl Dutch Digital Heritage Network (DDHN)]
File:NDSAlogo.jpg|[https://ndsa.org National Digital Stewardship Alliance (NDSA)]
File:nestor-logo.jpg|[https://www.langzeitarchivierung.de/Webs/nestor/EN/nestor/nestor_node.html Network of expertise in long-term storage of digital resources in Germany (NESTOR)]
File:Opf-logo.png|[http://openpreservation.org// The Open Preservation Foundation (OPF)]
File:POWRRlogo.jpg|[http://digitalpowrr.niu.edu/ Preserving digital Objects With Restricted Resources project (POWRR)]
</gallery>

==Funding and development==
COPTR was made possible by support from the Jisc funded SPRUCE Project and the Institute of Museum and Library Services funded Digital POWRR Project.
<gallery heights=90>
File:2013 Jisc Logo RGB72.png|[http://www.jisc.ac.uk/ Jisc]
File:SPRUCElogo.png|[http://wiki.opf-labs.org/display/SPR SPRUCE Project]
File:POWRRlogo.jpg|[http://digitalpowrr.niu.edu/ Preserving digital Objects With Restricted Resources project (POWRR)]
File:DPCLogoSquare.png|[https://dpconline.org/ Digital Preservation Coalition (DPC)]
File:nde-logo.png|[http://www.netwerkdigitaalerfgoed.nl Dutch Digital Heritage Network (DDHN)]
</gallery>

About COPTR

2026-02-05T15:44:14Z

Kieranjol: Adds user account creation

__NOTOC__
COPTR is a wiki based registry of digital preservation tools and workflows. It's main aim is to help practitioners discover preservation tools that might help them tackle particular preservation challenges. It can be browsed and searched directly by practitioners, or queried by other systems via an API.

Each tool in COPTR is categorised by the [[Lifecycle Stages|Lifecycle Stage]] it falls within, the (sub) [[Tool Functions|Function]] it performs and by the [[Content Types|Content Type]] that it operates on. It may also input and/or output specific [[File_Formats|file formats]]. For example, [[EpubCheck]] performs the Function [[Validation]], it operates on [[EBook]] Content and has [[EPUB]] as an input format. COPTR can help by enabling you to browse to tools that meet a particular need - perhaps relating to a specific [[Content Types|Content Type]] or [[Tool Functions|Function]].

COPTR also holds [[Workflow:Community_Owned_Workflows|digital preservation workflows]]. Sharing a workflow is a great way to exchange digital preservation practice and enable conversations around tools and how they are used.

[[Video guides to using COPTR|Watch these videos to find out more about how to use, and how to contribute to, COPTR]].

==How can I get involved?==
COPTR is a wiki, which means anyone can edit it and your contributions are very welcome. All changes are tracked, so if a mistake is made, it can easily be undone. So don't hold back - please dive in a help make the information in COPTR better.
Editing this wiki requires a user account, but due to problems with spam, you have to get in touch with us to request an account. Just email coptr@openpreservation.org with your preferred username and we'll get you sorted. If you have any problems accessing your account, or want to report any spam, you can use the same contact email to request help.
Here are some suggestions:
*[[Add a tool to COPTR|Add a new tool to COPTR]]. Add a tool you're familiar with or check out this [[Wish list of tools to add to COPTR|wish list of tools to add to COPTR]].
*[[Contribute your workflow to COW|Add a new workflow to COW]]. It doesn't have to be a finished workflow - a draft or proposal is still useful!
*Correct or add more detail to existing entries - use the "Edit with form" option to do this. For example, you could:
** Check the [[:Category:Tool Status|Tool Status]], especially [[:Category:Unknown_Tool_Status|where the status is not known]].
** Flag1 or fix up outdated details, like broken URLs.
** Flag1 or remove text that does not meet the editorial guidelines (see ''Scope'' below).
** Add input or output formats. Ask for help (see below) if you need to create new [[File_Formats|File format]] entries.2

Beyond using, adding and updating the contents, you can also get involved by helping sustain and grow COPTR itself. Please take a look at the sustainability and governance sections below!

1Need to add some guidance on how to flag these cases.

2Can this be made easier?

==What is the scope of COPTR?==
COPTR captures basic, factual details about a tool, what it does, how to find more information (relevant URLs) and references to user experiences with the tool. The scope is a broad interpretation of the term "digital preservation". In other words, if a tool is useful in performing a digital preservation function such as those described in the OAIS model or the DCC lifecycle model, then it's within scope of this registry.

*In scope: Characterisation, visualisation, rendering, migration, storage, fixity, access, delivery, search, web archiving, open source software ->everything inbetween<- commercial software.
*Out of scope: Digitisation, file creation

Crucially, the goal of COPTR is to help you find tools to try out, not tell you what tools to use. The right tool often depends on your specific context and goals. By linking tools to user experiences, workflows, and other records of practice, we hope it will be easier to find out what others are doing, and that this will help you evaluate what you need.

Beyond tools, there are a number of other 'registries' that are related to COPTR and interlinked with it such as the [http://fileformats.archiveteam.org/ Just Solve The Problem File Formats Wiki] for detailed file format information, and the [https://www.nationalarchives.gov.uk/pronom/ PRONOM] format identification registry. You can find more resources and registries on the [https://github.com/digipres/awesome-digital-preservation?tab=readme-ov-file#readme Digital Preservation Awesome List].

==Why does COPTR exist?==
The digital preservation community had created a whole host of different tool registries that described preservation tools. Many people had also written blog posts about tools or organisations hosted web pages with lists of tools that tackled particular areas. There was lots of duplication between these lists and registries, but at the same time, each one often held tools that weren't described elsewhere. COPTR was built by bringing together and rationalising these other registries and lists. It was originally created in 2012 as a small activity within the Jisc funded [http://wiki.opf-labs.org/display/SPR SPRUCE Project] ([https://www.dpconline.org/digipres/collaborative-projects/completed-projects/spruce more info]), and has been significantly developed since - most notably with an upgrade to Semantic Mediawiki in 2021.

It was inspired by the original [http://digitalpowrr.niu.edu/ Preserving digital Objects With Restricted Resources project (POWRR)] Tools Grid and developed in partnership with the POWRR Project.

==Governance==
Currently COPTR does not have a community governance process in place.

It is supported by the Open Preservation Foundation (OPF) and the Digital Preservation Coalition (DPC), who cover the basic aspect of hosting the service, taking backups, removing entries that are clearly off-topic spam or abusive. Other issues, such as guidelines or processes around content quality, scope, review (see e.g. responding to [[Talk:Main_Page| Main page/discussion]]) or major service changes (e.g. shifting to other platforms, or dealing with the sustainability issues outlined below) are not covered.

The staff of the OPF and DPC are not the target users for COPTR, so we would like to encourage community members who care about COPTR to help us find a way to improve this situation. Please join us or get in touch via [[#Contact.2C_feedback_and_questions|the contact details below]]!

==Sustainability==

COPTR is stable, but has some sustainability issues. [https://github.com/orgs/digipres/discussions/66 Please see the full details in this statement on the service status and sustainability.]

==Technical stuff==
*[[Data structures in COPTR]] - information on the COPTR data model and its maintenance
*[[How COPTR Works]] - information on the technical setup of COPTR
*How to use the [[Using the COPTR data feed|COPTR data feed and API]]
*[[Development plans]]

==Organizational Contributions==

Organisations who would like to contribute the contents of their tool registry to COPTR should:

*Merge your own tool registry data with the new community registry (COPTR can help with this)
*Remove your own registry and agree not to set up any new project owned registries/lists
*Link to COPTR or expose the COPTR data by utilising the COPTR data feed
*Contribute any effort you have in adding new tools over time, to the community registry

COPTR is aiming to concentrate information about digital preservation tools in one place, keep the information in the registry maintainable and current by pooling the community's effort in one place, and avoid the emergence of new registries.

==Contact, feedback and questions==
Email [mailto:coptr@openpreservation.org coptr@openpreservation.org] if you have problems using the service, e.g. making sure you have a user account that works.

You can use [[Talk:Main_Page| Main page/discussion]] or [https://github.com/orgs/digipres/discussions the DigiPres.org GitHub discussion forums] to provide open feedback or raise questions or issues with the service.

If you'd like some support, or you're just curious about COPTR, please consider joining the [https://dpconline.org/digipres/pr-sig Preservation Registries Special Interest Group (PR-SIG)] and coming along to one our online ''Collaboration Café'' calls.

==COPTR Partners==
COPTR was created and launched with the support of the [http://www.educopia.org/events/ANADPII Aligning National Approaches to Digital Preservation] initiative and has been populated and maintained by members of the COPTR partner organisations:
<gallery heights=90>
File:DCClogo.png|[http://www.dcc.ac.uk The Digital Curation Centre (DCC)]
File:DCElogo.gif|[http://digitalcurationexchange.org/ The Digital Curation Exchange (DCE)]
File:DPCLogoSquare.png|[http://dpconline.org/ The Digital Preservation Coalition (DPC)]
File:nde-logo.png|[http://www.netwerkdigitaalerfgoed.nl Dutch Digital Heritage Network (DDHN)]
File:NDSAlogo.jpg|[https://ndsa.org National Digital Stewardship Alliance (NDSA)]
File:nestor-logo.jpg|[https://www.langzeitarchivierung.de/Webs/nestor/EN/nestor/nestor_node.html Network of expertise in long-term storage of digital resources in Germany (NESTOR)]
File:Opf-logo.png|[http://openpreservation.org// The Open Preservation Foundation (OPF)]
File:POWRRlogo.jpg|[http://digitalpowrr.niu.edu/ Preserving digital Objects With Restricted Resources project (POWRR)]
</gallery>

==Funding and development==
COPTR was made possible by support from the Jisc funded SPRUCE Project and the Institute of Museum and Library Services funded Digital POWRR Project.
<gallery heights=90>
File:2013 Jisc Logo RGB72.png|[http://www.jisc.ac.uk/ Jisc]
File:SPRUCElogo.png|[http://wiki.opf-labs.org/display/SPR SPRUCE Project]
File:POWRRlogo.jpg|[http://digitalpowrr.niu.edu/ Preserving digital Objects With Restricted Resources project (POWRR)]
File:DPCLogoSquare.png|[https://dpconline.org/ Digital Preservation Coalition (DPC)]
File:nde-logo.png|[http://www.netwerkdigitaalerfgoed.nl Dutch Digital Heritage Network (DDHN)]
</gallery>

FTK Imager

2026-02-05T15:20:51Z

Kieranjol: Add stub for FTK Imager, as it is a distinct tool from FTK (Forensic ToolKit)

{{Infobox tool
|purpose=Create and open disk images in a variety of formats.
|homepage=https://www.exterro.com/digital-forensics-software/ftk-imager
|tool_status=Maintained
|cost=Free
|platforms=Windows
|function=Disk Imaging
|content=Disk Image
}}
{{Infobox tool details}}
== Description ==
A graphical User Interface for Windows that allows the physical or logical disk imaging of a variety of inputs. As FTK Imager can create physical disk images, it can create disk images of drives where Windows cannot interpret the file system itself, such as Mac or Linux formatted drives. FTK Imager also allows for the navigation and file extraction of a variety of file systems within disk images, especially useful for file systems not supported by Windows.
== User Experiences ==

Talk:FTK (Forensic Toolkit)

2026-02-05T15:01:58Z

Kieranjol: Making a case for a seperate FTK Imager page.

I suggest that a separate page for FTK Imager is created as these are totally different tools. Happy to create one!

7-Zip

2026-02-05T14:58:30Z

Kieranjol: Adds date modified handling of 7-zip vs windows extractor

{{Infobox tool
|purpose=7-Zip is a file archiver with a high compression ratio, and encryption and fixity check capabilities
|homepage=http://www.7-zip.org/
|license=7-Zip is open source software [http://www.7-zip.org/]. Most of the source code is under the GNU LPGL license [http://www.7-zip.org/]. You can use 7-Zip on any computer, including a computer in a commercial organization [http://www.7-zip.org/]. You don't need to register or pay for 7-zip [http://www.7-zip.org/].
|platforms=7-zip can be utilized on multiple platforms including Windows 7, Vista, XP, 2008, 2003, 2000, NT, ME, and 98 [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp].
|function=Fixity, Rendering, Transfer
|content=Container, Disk Image
}}
{{Infobox tool details
|ohloh_id=sevenzip
}}

[[Category:File Compression]]
[[Category:Encryption]]

= Description =
7-Zip is a file archiver with a high compression ratio [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp]. You can use 7-Zip on any computer, including a computer in a commercial organization [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp]. You don't need to register or pay for 7-zip [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp]. 7-Zip works for Windows 7, Vista, XP, 2008, 2003, 2000, NT, ME, and 98 [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp].

Most of the source code is under the GNU LGPL license [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp].

The unRar code is under a mixed license with GNU LGPL + unRAR restrictions [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp]. Check the license for details [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp].

=== Platform ===
7-zip can be utilized on multiple platforms including Windows 7, Vista, XP, 2008, 2003, 2000, NT, ME, and 98 [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp]

= User Experiences =
7-zip can be used to open an ISO Image File[http://en.wikipedia.org/wiki/ISO_image].

In order to secure a transfer along untrusted lines, 7-Zip can encrypt containers with AES-256.

For securing fixity: 7-Zip records checksums on compression and verifies them on decompression.

7-Zip can handle containers larger than 2 GigaByte (unlike tools for the genuine ZIP format).

And there is a port of the command line version to Linux/Unix [http://www.sourceforge.net/projects/sevenzip/editorial/?source=psp].

7-Zip has good handling of date-modified file system values which otherwise can be reset to date of extraction when using tools such as the native Windows extraction tool

= Development Activity =