diff --git a/CMakeLists.txt b/CMakeLists.txt
index 174288d0..e03fae80 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -226,12 +226,6 @@ add_feature_info(rzsz
     "ZModem support in Konsole"
 )
 
-find_program(LSOF_EXECUTABLE lsof)
-add_feature_info(lsof
-    LSOF_EXECUTABLE
-    "Open files widget (KLsofWidget)"
-)
-
 find_program(XKILL_EXECUTABLE xkill)
 add_feature_info(xkill
     XKILL_EXECUTABLE
diff --git a/libs/ksysguard/CMakeLists.txt b/libs/ksysguard/CMakeLists.txt
index 12984100..75c037b6 100644
--- a/libs/ksysguard/CMakeLists.txt
+++ b/libs/ksysguard/CMakeLists.txt
@@ -1,6 +1,5 @@
 ########### next target ###############
 
-add_subdirectory( lsofui )
 add_subdirectory( processcore )
 add_subdirectory( processui )
 add_subdirectory( signalplotter )
diff --git a/libs/ksysguard/lsofui/CMakeLists.txt b/libs/ksysguard/lsofui/CMakeLists.txt
deleted file mode 100644
index 51b15c38..00000000
--- a/libs/ksysguard/lsofui/CMakeLists.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-
-########### next target ###############
-
-set(lsofui_LIB_SRCS
-   lsof.cpp
-   LsofSearchWidget.ui 
-)
-
-add_library(lsofui SHARED ${lsofui_LIB_SRCS})
-target_link_libraries(lsofui KDE4::kio)
-
-set_target_properties(lsofui PROPERTIES
-    VERSION ${GENERIC_LIB_VERSION}
-    SOVERSION ${GENERIC_LIB_SOVERSION}
-)
-
-install(
-    TARGETS lsofui
-    EXPORT kdeworkspaceTargets
-    DESTINATION ${KDE4_LIB_INSTALL_DIR}
-)
-
-########### install files ###############
-
-install(
-    FILES lsof.h
-    DESTINATION ${KDE4_INCLUDE_INSTALL_DIR}/ksysguard
-)
-
-kde4_add_widget(ksysguardlsofwidgets_SRCS ksysguardlsof.widgets)
-
-kde4_add_plugin(ksysguardlsofwidgets ${ksysguardlsofwidgets_SRCS})
-
-target_link_libraries(ksysguardlsofwidgets
-    KDE4::kdecore
-    ${QT_QTGUI_LIBRARY}
-    ${QT_QTUITOOLS_LIBRARY}
-    lsofui
-)
-
-install(
-    TARGETS ksysguardlsofwidgets
-    DESTINATION ${KDE4_PLUGIN_INSTALL_DIR}/plugins/designer
-)
diff --git a/libs/ksysguard/lsofui/LsofSearchWidget.cpp b/libs/ksysguard/lsofui/LsofSearchWidget.cpp
deleted file mode 100644
index f91fad70..00000000
--- a/libs/ksysguard/lsofui/LsofSearchWidget.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
-    KSysGuard, the KDE System Guard
-
-	Copyright (c) 1999 Chris Schlaeger <cs@kde.org>
-	Copyright (c) 2007 John Tapsell <tapsell@kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-    Boston, MA 02110-1301, USA.
-
-
-*/
-
-#include <klocale.h>
-#include <kdebug.h>
-
-#include "moc_LsofSearchWidget.cpp"
-#include "ui_LsofSearchWidget.h"
-
-LsofSearchWidget::LsofSearchWidget(QWidget* parent, int pid)
-    : KDialog(parent)
-{
-    setObjectName("Renice Dialog");
-    setModal(true);
-    setCaption(i18n("Renice Process"));
-    setButtons(KDialog::Close);
-    QWidget *widget = new QWidget(this);
-    setMainWidget(widget);
-    ui = new Ui_LsofSearchWidget();
-    ui->setupUi(widget);
-    ui->klsofwidget->setPid(pid);
-    ktreewidgetsearchline
-}
-
diff --git a/libs/ksysguard/lsofui/LsofSearchWidget.h b/libs/ksysguard/lsofui/LsofSearchWidget.h
deleted file mode 100644
index 892f791f..00000000
--- a/libs/ksysguard/lsofui/LsofSearchWidget.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
-    KSysGuard, the KDE System Guard
-
-    Copyright (c) 2008 John Tapsell <tapsell@kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-    Boston, MA 02110-1301, USA.
-
-*/
-
-#ifndef _LsofSearchWidget_h_
-#define _LsofSearchWidget_h_
-
-#include <kdialog.h>
-
-class Ui_LsofSearchWidget;
-
-/**
- * This class creates and handles a simple dialog to change the scheduling
- * priority of a process.
- */
-class LsofSearchWidget : public KDialog
-{
-    Q_OBJECT
-public:
-    LsofSearchWidget(QWidget *parent);
-
-private:
-    Ui_LsofSearchWidget *ui;
-};
-
-#endif
diff --git a/libs/ksysguard/lsofui/LsofSearchWidget.ui b/libs/ksysguard/lsofui/LsofSearchWidget.ui
deleted file mode 100644
index 88054fc1..00000000
--- a/libs/ksysguard/lsofui/LsofSearchWidget.ui
+++ /dev/null
@@ -1,53 +0,0 @@
-<ui version="4.0" >
- <class>KLsofSearchWidget</class>
- <widget class="QWidget" name="KLsofSearchWidget" >
-  <property name="geometry" >
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>956</width>
-    <height>686</height>
-   </rect>
-  </property>
-  <layout class="QVBoxLayout" name="verticalLayout" >
-   <item>
-    <widget class="KTreeWidgetSearchLine" name="ktreewidgetsearchline" />
-   </item>
-   <item>
-    <widget class="KLsofWidget" name="klsofwidget" >
-     <property name="rootIsDecorated" >
-      <bool>false</bool>
-     </property>
-     <column>
-      <property name="text" >
-       <string>Stream</string>
-      </property>
-     </column>
-     <column>
-      <property name="text" >
-       <string>Type</string>
-      </property>
-     </column>
-     <column>
-      <property name="text" >
-       <string>Filename</string>
-      </property>
-     </column>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <customwidgets>
-  <customwidget>
-   <class>KTreeWidgetSearchLine</class>
-   <extends>KLineEdit</extends>
-   <header>ktreewidgetsearchline.h</header>
-  </customwidget>
-  <customwidget>
-   <class>KLsofWidget</class>
-   <extends>QTreeWidget</extends>
-   <header>lsof.h</header>
-  </customwidget>
- </customwidgets>
- <connections/>
-</ui>
diff --git a/libs/ksysguard/lsofui/Messages.sh b/libs/ksysguard/lsofui/Messages.sh
deleted file mode 100755
index e84d92d3..00000000
--- a/libs/ksysguard/lsofui/Messages.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/bash
-$EXTRACTRC *.ui >> rc.cpp
-$XGETTEXT *.cpp  -o $podir/ksysguardlsofwidgets.pot
-rm -f rc.cpp
diff --git a/libs/ksysguard/lsofui/ksysguardlsof.widgets b/libs/ksysguard/lsofui/ksysguardlsof.widgets
deleted file mode 100644
index 5673bee5..00000000
--- a/libs/ksysguard/lsofui/ksysguardlsof.widgets
+++ /dev/null
@@ -1,8 +0,0 @@
-[Global]
-PluginName=KSysGuardLsofWidgets
-
-[KLsofWidget]
-Group=KSysGuard (KDE)
-ConstructorArgs=(parent)
-IncludeFile=lsof.h
-
diff --git a/libs/ksysguard/lsofui/lsof.cpp b/libs/ksysguard/lsofui/lsof.cpp
deleted file mode 100644
index a43af349..00000000
--- a/libs/ksysguard/lsofui/lsof.cpp
+++ /dev/null
@@ -1,99 +0,0 @@
-#include <QString>
-#include <QProcess>
-#include <klocale.h>
-
-#include "lsof.h"
-
-struct KLsofWidgetPrivate
-{
-    qlonglong pid;
-    QProcess *process;
-};
-
-KLsofWidget::KLsofWidget(QWidget *parent)
-    : QTreeWidget(parent), d(new KLsofWidgetPrivate())
-{
-    d->pid = -1;
-    setColumnCount(3);
-    setUniformRowHeights(true);
-    setRootIsDecorated(false);
-    setItemsExpandable(false);
-    setSortingEnabled(true);
-    setAllColumnsShowFocus(true);
-    setHeaderLabels(QStringList() << i18nc("Short for File Descriptor", "FD") << i18n("Type") << i18n("Object"));
-    d->process = new QProcess(this);
-    connect(d->process, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(finished(int,QProcess::ExitStatus)));
-}
-
-KLsofWidget::~KLsofWidget()
-{
-    delete d;
-}
-
-qlonglong KLsofWidget::pid() const
-{
-    return d->pid;
-}
-
-void KLsofWidget::setPid(qlonglong pid)
-{
-    d->pid = pid;
-    update();
-}
-
-bool KLsofWidget::update()
-{
-    clear();
-    QStringList args;
-    d->process->waitForFinished();
-    args << "-Fftn";
-    if (d->pid > 0) {
-        args << ("-p" + QString::number(d->pid));
-    }
-    d->process->start("lsof", args);
-    return true;
-}
-
-void KLsofWidget::finished(int exitCode, QProcess::ExitStatus exitStatus) 
-{
-    Q_UNUSED(exitCode);
-    Q_UNUSED(exitStatus);
-
-    char buf[1024];
-    QTreeWidgetItem *process = NULL;
-    while (true) {
-        ::memset(buf, '\0', sizeof(buf) * sizeof(char));
-        qint64 lineLength = d->process->readLine(buf, sizeof(buf));
-
-        if (lineLength <= 0) {
-            break;
-        }
-        if (buf[lineLength-1] == '\n') {
-            lineLength--;
-        }
-
-        switch(buf[0]) {
-            /* Process related stuff */
-            case 'f': {
-                process = new QTreeWidgetItem(this);
-                process->setText(0,QString::fromUtf8(buf+1, lineLength - 1));
-                break;
-            }
-            case 't': {
-                if (process)
-                    process->setText(1,QString::fromUtf8(buf+1, lineLength - 1));
-                break;
-            }
-            case 'n': {
-                if (process)
-                    process->setText(2,QString::fromUtf8(buf+1, lineLength - 1));
-                break;
-            }
-            default: {
-                break;
-            }
-        }
-    }
-}
-
-#include "moc_lsof.cpp"
diff --git a/libs/ksysguard/lsofui/lsof.h b/libs/ksysguard/lsofui/lsof.h
deleted file mode 100644
index 59803acd..00000000
--- a/libs/ksysguard/lsofui/lsof.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*  This file is part of the KDE project
-    
-    Copyright (C) 2007 John Tapsell <tapsell@kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-    Boston, MA 02110-1301, USA.
-
-*/
-
-#ifndef LSOFWIDGET_H_
-#define LSOFWIDGET_H_
-
-#include <QtCore/QObject>
-#include <QtCore/QProcess>
-#include <QtGui/QTreeWidget>
-#include <kapplication.h>
-#include <kdemacros.h>
-
-struct KLsofWidgetPrivate;
-
-class KDE_EXPORT KLsofWidget : public QTreeWidget
-{
-    Q_OBJECT
-    Q_PROPERTY(qlonglong pid READ pid WRITE setPid)
-public:
-    KLsofWidget(QWidget *parent = NULL);
-    ~KLsofWidget();
-
-    bool update();
-
-public Q_SLOTS:
-    qlonglong pid() const;
-    void setPid(qlonglong pid);
-
-private Q_SLOTS:
-    /* For QProcess *process */
-    void finished(int exitCode, QProcess::ExitStatus exitStatus);
-private:
-    KLsofWidgetPrivate* const d;
-};
-
-#endif // LSOFWIDGET_H_