Valknut (software)

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Valknut (1).png
Valknut in KDE
Developer(s) Mathias Küster, Edward Sheldrake
Stable release
0.3.23 (Qt3), 0.4.9 (Qt4) / 10 February 2009; 8 years ago (2009-02-10)
Written in C++
Operating system Linux, FreeBSD, Mac OS X, Microsoft Windows, OS/2 resp. eComStation
Type Peer-to-peer (P2P)
License GPL

Valknut is a program that uses the Direct Connect protocol. It is compatible with other DC clients, such as the original DC from Neomodus, DC++ and derivatives. Valknut also interoperates with all common DC hub software.

Valknut was originally written by Mathias Küster and is licensed under the terms of the GNU General Public License (GPL). It is written in C++ and uses the cross-platform Qt library for its GUI. Valknut compiles and runs on Linux, FreeBSD, Mac OS X, Microsoft Windows, and OS/2 - eComStation.

Originally, Valknut was called DCGUI, which was similar to the name of another Linux DC client. It was then renamed to dcgui-qt to avoid confusion. However, trademark problems relating to the use of 'Qt' in the name forced another name change, to Valknut.

Following the release of Valknut 0.3.7, Mathias Küster stopped working on Valknut. Edward Sheldrake then moved the code into the wxDCGUI project, where work is underway to add additional features, as well as to port Valknut's Qt3 user interface to Qt4 and eventually to wxWidgets. In May 2008 the first Qt4 version was released.

During startup, the graphics of the splash screen show a Valknut.


EiskaltDC is a fork of Valknut. EiskaltDC is dead, EiskaltDC++ is alive.


EiskaltDC++ (ru) is a fork of DC++ (only kernel, without GUI) but programmed by the same authors. Packages with EiskaltDC++ have been available for example on Fedora or Debian.[1]

There are various graphical interfaces available, using GTK+ version 2 and 3 and Qt version 4 and 5 for the GUI widgets. There also is daemon that is remote controllable via JSON-RPC by CLI on Perl and WebUI on JavaScript.[2]


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