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KOrganizer

Kontact
Kontact Oxygen.svg
KDE4.2-Kontact.png
Kontact screenshot
Developer(s) KDE
Stable release
5.2.2 / 20 June 2016
Written in C++
Operating system Unix-like, Microsoft Windows (Experimental)
Type Personal Information Manager
License GNU General Public License
Website userbase.kde.org/Kontact
KMail
Internet mail icon.svg
KDE4.2-KMail.png
KMail using the default layout: the folder list on the left side and the preview pane below the message list (top right)
Website userbase.kde.org/KMail
KAddressBook
KAddressBook-Oxygen.png
KDE4.2-KAddressBook.png
Website userbase.kde.org/KAddressBook
KOrganizer
KOrganizer-Oxygen.png
KDE4.2-KOrganizer-Calendar.png
KOrganizer’s Calendar view
Website userbase.kde.org/KOrganizer
Akregator
Akregator.svg
KDE4.2-Akregator.png
Akregator running under KDE 4.2
Website userbase.kde.org/Akregator
KNode
KNodeLogo.png
KNode.png
KNode 0.10.4
Website userbase.kde.org/KNode
KJots
Kjots.svg
KJots.png
Initial release 1997 (1997)
Website userbase.kde.org/KJots

Kontact is a personal information manager and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email. It offers a number of inter-changeable graphical UIs (KMail, KAddressBook, Akregator, etc.) all built on top of a common core.

Technically speaking, Kontact only refers to a small umbrella application that unifies different stand-alone applications under one user interface. KDE PIM refers to a work group within the larger KDE project that develops the individual applications in a coordinated way.

In popular terms, however, Kontact often refers to the whole set of KDE PIM applications. These days many popular Linux distributions such as Kubuntu hide the individual applications and only place Kontact prominently.

The initial groupware container application was written in an afternoon by Matthias Hölzer-Klüpfel and later imported into the KDE source repository and maintained by Daniel Molkentin. This container application is essential for Kontact to operate, but without embedded components is not useful by itself.

The first embedded components were created by Cornelius Schumacher. He modified the KAddressBook and KOrganizer applications to create the initial address book and organizer components. At this stage no mail client component existed so KDE still lacked a functional integrated groupware application. However Cornelius' groundbreaking work acted as a prototype for other developers to base their efforts on.

Don Sanders created the missing mail client component by modifying the KMail application. He then integrated the mail client component with the other components, and the groupware container application, assembled and released the initial Kontact packages, and created the initial Kontact website.

Daniel Molkentin, Cornelius Schumacher and Don Sanders then formed the core Kontact team. The KMail and container application changes were imported into the KDE source repository, and Kontact was released as part of KDE 3.2.

During the construction of the Kontact application suite, the Kolab groupware server was being worked on by Erfrakon, Intevation.net and Klarälvdalens Datakonsult simultaneously and was completed at approximately the same time. This work was done as part of the Kroupware project that also involved modifying the KMail and KOrganizer applications to enhance them with additional groupware features.


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