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K Desktop Environment 3

K Desktop Environment 3
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K Desktop Environment 3.5
Developer(s) KDE
Initial release 3 April 2002
Stable release
3.5.10 / 26 August 2008; 8 years ago (2008-08-26)
Development status Superseded by KDE SC 4
Written in C++ (Qt 3)
Operating system Unix-like with X11
Available in Multilingual
Type Desktop environment
License GPL and other licenses
Website kde.org
Trinity Desktop Environment
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Screenshot of Trinity 3.5.12.png
Trinity 3.5.12
Developer(s) KDE, Pearson Computing
Stable release
14.0.4 / 7 November 2016; 2 months ago (2016-11-07)
Preview release
14.1.0 Development / 28 February 2016; 10 months ago (2016-02-28)
Development status Current
Written in C++ (Qt 3)
Operating system Unix-like with X11
Available in Multilingual
Type Desktop environment
License GPL and other licenses
Website trinitydesktop.org

K Desktop Environment 3 is the third series of releases of the K Desktop Environment (after that called KDE Software Compilation). There are six major releases in this series.

K Desktop Environment 3.0 introduced better support for restricted usage, a feature demanded by certain environments such as kiosks, Internet cafes and enterprise deployments, which disallows the user from having full access to all capabilities of a piece of software. To address these needs, KDE 3.0 included a new lockdown framework, essentially a permissions-based system for altering application configuration options that supplements the standard UNIX permissions system. The KDE panel and the desktop manager were modified to employ this system, but other major desktop components, such as Konqueror and the Control Center, had to wait for subsequent releases.

K Desktop Environment 3.0 debuted a new printing framework, KDEPrint. KDEPrint's modular design enabled it to support different printing engines, such as CUPS, LPRng, and . In conjunction with CUPS, KDEPrint was able to manage an elaborate enterprise networked printing system. Since KDEPrint provides a command-line interface, its framework, including its GUI configuration elements, is accessible to non-KDE applications, such as OpenOffice.org, the Mozilla Application Suite, and Acrobat Reader.

This release also introduced a new KDE address book library providing a central address book for all KDE applications. The new library is based on the vCard standard and has provisions for being extended by additional backends such as LDAP and database servers.

K Desktop Environment 3.1 introduced new default window (Keramik) and icon (Crystal) styles as well as several feature enhancements.

The update included greatly improved LDAP integration throughout Kontact, enhanced security for KMail (S/MIME, PGP/MIME and X.509v3 support) and Microsoft Exchange 2000 compatibility for KOrganizer. The desktop lockdown framework, introduced in version 3.0, was extended. Other improvements included tabbed browsing in Konqueror; a new download manager, KGet; a new multimedia player plugin, based on Xine, and a desktop sharing framework.


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