Horde

Short description: Open-source groupware

Horde Application Framework

Horde Portal

Developer(s)| The Horde Core Team
Written in| PHP
Operating system| Cross-platform
Available in| English and many others (multilingual)[1]
Type| Web application framework
License| GNU Lesser General Public License
Website| www.horde.org

Horde is a free web-based groupware.

The components of this groupware rest on the Horde framework. This PHP-based framework provides all the elements required for rapid web application development.

Horde offers applications such as the Horde IMP email client, a groupware package (calendar, notes, tasks, file manager), a wiki and a time and task tracking software.

## Contents

* 1 History
* 2 Applications
* 2.1 Horde Email Platform
* 2.2 Horde Groupware
* 2.2.1 Horde Groupware Webmail Edition
* 2.3 Horde developer tools
* 3 Integration into other products
* 4 See also
* 5 References
* 6 External links

## History

The Horde framework evolved from the IMP (Internet Messaging Project) webmail that Chuck Hagenbuch published on Freshmeat in 1998.[2] A constant stream of feature requests not all fitting for a webmail application led to the development of a more generic web application backbone: the Horde framework. The first announcement on Freshmeat was version 1.3.3 at the beginning of 2001.[3] The release of Horde 2.0 and IMP 3.0 was the first one with two truly separate components.[4]

Horde as a generic web application framework primarily supported the webmail as well as a set of groupware applications by the time Horde 3.0 was released in 2004.[5] The modular and flexible nature of the software allowed many service providers and packagers to integrate the software into their portfolio. Horde is the software used for webmail offered by SAPO[6] which serves several million users.[7] The software has been packaged for all major Linux distributions[8][9][10] and is available as a component in hosting tools such as Plesk[11] or cPanel.[12]

With the release of Horde 4.0 in 2011[13] the framework saw significant architectural changes, a split into nearly a hundred separate PEAR packages[14] and support for smartphones.

While preparing the last Horde 3 maintenance release in February 2012 the Horde developers discovered that hackers breached the security of the Horde FTP server and managed to place a backdoor into three of the distributed packages.[15] The attack had taken place in November the year before so that the modified packages were distributed over three months. One of the tainted packages was picked up by the unstable branches of Debian and Ubuntu and were fixed immediately after the successful attack was disclosed.[16] The attackers did not modify the newer Horde 4 sources.

## Applications

The Horde framework contains the following applications and application groups.

### Horde Email Platform

* IMP \- a web-based email client.
* MIMP - a stripped-down version of IMP for use on devices with a small screen or limited HTML support.
* Ingo - an email filter rules manager.
* Sork - a collection of four other Horde modules (accounts, forwards, passwd, and vacation) which together perform various account management functions.

### Horde Groupware

* Kronolith - a calendar application.
* Mnemo - a note manager.
* Nag - a multiuser task list manager.
* Turba - a Horde address book / contact manager.

#### Horde Groupware Webmail Edition

Horde Groupware Webmail Edition extends the Horde Groupware by the Horde e-mail applications IMP and Ingo.

### Horde developer tools

* Chora – a version control repository viewer supporting CVS and Subversion.
* Whups – the Web Horde User Problem Solver, a ticket-tracking system

## Integration into other products

Horde was the web client for the Kolab groupware system up until version 3. It is also integrated into the Plesk Server management software, and was integrated into cPanel & WHM until version 108.[17]

## See also

* List of collaborative software § Open source software compares its features with others

## References

1. ↑ "Horde localization". www.horde.org. http://www.horde.org/community/localization.
2. ↑ "Horde case study". www.horde.org. http://www.horde.org/papers/oscon2001-case_study/.
3. ↑ "Horde-1.3.3 release". freecode.com. http://freecode.com/projects/horde/releases/13850.
4. ↑ "Horde-2.0 release". marc.info. http://marc.info/?l=horde-dev&m=101003795801512&w=4.
5. ↑ "Horde-3.0 release". it-republik.de. http://it-republik.de/dotnet/news/Horde-3.0-and-IMP-4.0-Released-019339.html.
6. ↑ "Horde powering portugalmail.pt". codebits.eu. https://codebits.eu/Ghunti.
7. ↑ "Horde developer supports SAPO". janschneider.de. http://janschneider.de/consulting.support/references.
8. ↑ "Horde on Debian". wiki.debian.org. http://wiki.debian.org/Horde.
9. ↑ "Horde on Ubuntu". packages.ubuntu.com. http://packages.ubuntu.com/source/oneiric/horde3.
10. ↑ "Horde RPMs". rpmfind.net. http://rpmfind.net/linux/rpm2html/search.php?query=horde.
11. ↑ "Horde via Plesk". www.parallels.com. http://www.parallels.com/r/pdfs/Datasheets/plesk.pdf.
12. ↑ "Horde via cPanel". cpanel.net. http://docs.cpanel.net/twiki/bin/view/AllDocumentation/HordeReadme.
13. ↑ "Horde4.0 release". techworld.com.au. http://www.techworld.com.au/article/382641/open_source_horde_groupware_reaches_version_4/.
14. ↑ "Horde PEAR server". pear.horde.org. http://pear.horde.org.
15. ↑ "Horde 3 tainted by backdoor". arstechnica.com. https://arstechnica.com/business/news/2012/02/malicious-backdoor-in-open-source-messaging-apps-not-spotted-for-4-months.ars.
16. ↑ "Debian removal of the backdoor". debian.org. http://packages.debian.org/changelogs/pool/main/h/horde3/horde3_3.3.12+debian0-2/changelog#version3.3.12_debian0-2. [yes|permanent dead link|dead link}}]
17. ↑ "cPanel Deprecation Plan" (in English). https://docs.cpanel.net/knowledge-base/cpanel-product/cpanel-deprecation-plan/.

## External links

* v
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Web frameworks

* Comparison

C++|

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ColdFusion|

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Common Lisp|

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Haskell|

* Yesod
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Java|

* AppFuse
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Perl|

* Catalyst
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PHP|

* CakePHP
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Python|

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Ruby|

* Camping
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Scala|

* Lift
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Smalltalk|

* AIDA/Web
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Other languages|

* Vibe.d (D)
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* v
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Free and open-source collaborative software

Client-Server|

* Bongo
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* Kopano
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Web-based|

* Citadel
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* Horde
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* phpGroupWare
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* Tine 2.0
* OnlyOffice

Personal information managers|

* Evolution
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* Mozilla Sunbird
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