diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -92,14 +92,14 @@
 
 find_package(Fontconfig)
 set_package_properties(Fontconfig PROPERTIES DESCRIPTION "Font access configuration library"
-                       URL "http://www.freedesktop.org/wiki/Software/fontconfig"
+                       URL "https://www.freedesktop.org/wiki/Software/fontconfig"
                        TYPE OPTIONAL
                        PURPOSE "Needed to build font configuration and installation tools"
                       )
 
 find_package(X11)
 set_package_properties(X11 PROPERTIES DESCRIPTION "X11 libraries"
-                        URL "http://www.x.org"
+                        URL "https://www.x.org"
                         TYPE REQUIRED
                         PURPOSE "Required for building the X11 based workspace"
                       )
diff --git a/HACKING b/HACKING
--- a/HACKING
+++ b/HACKING
@@ -14,7 +14,7 @@
 ============
 New code should follow the kdelibs hacking style, as found here:
 
-    http://techbase.kde.org/Policies/Kdelibs_Coding_Style
+    https://community.kde.org/Policies/Kdelibs_Coding_Style
 
 Existing code that does not follow this style should be migrated over during
 editting.
diff --git a/applets/icontasks/metadata.desktop b/applets/icontasks/metadata.desktop
--- a/applets/icontasks/metadata.desktop
+++ b/applets/icontasks/metadata.desktop
@@ -131,7 +131,7 @@
 X-KDE-PluginInfo-Email=hein@kde.org
 X-KDE-PluginInfo-Name=org.kde.plasma.icontasks
 X-KDE-PluginInfo-Version=3.0
-X-KDE-PluginInfo-Website=http://userbase.kde.org/Plasma/Tasks
+X-KDE-PluginInfo-Website=https://userbase.kde.org/Plasma/Tasks
 X-KDE-PluginInfo-Category=Windows and Tasks
 X-KDE-PluginInfo-Depends=
 X-KDE-PluginInfo-License=GPL-2.0+
diff --git a/applets/kickoff/package/metadata.desktop b/applets/kickoff/package/metadata.desktop
--- a/applets/kickoff/package/metadata.desktop
+++ b/applets/kickoff/package/metadata.desktop
@@ -176,7 +176,7 @@
 X-KDE-PluginInfo-Email=plasma-devel@kde.org
 X-KDE-PluginInfo-Name=org.kde.plasma.kickoff
 X-KDE-PluginInfo-Version=1.0
-X-KDE-PluginInfo-Website=http://userbase.kde.org/Plasma/Kickoff
+X-KDE-PluginInfo-Website=https://userbase.kde.org/Plasma/Kickoff
 X-KDE-PluginInfo-Category=Application Launchers
 X-KDE-PluginInfo-Depends=
 X-KDE-PluginInfo-License=GPL-2.0+
diff --git a/applets/taskmanager/package/metadata.desktop b/applets/taskmanager/package/metadata.desktop
--- a/applets/taskmanager/package/metadata.desktop
+++ b/applets/taskmanager/package/metadata.desktop
@@ -164,7 +164,7 @@
 X-KDE-PluginInfo-Email=hein@kde.org
 X-KDE-PluginInfo-Name=org.kde.plasma.taskmanager
 X-KDE-PluginInfo-Version=4.0
-X-KDE-PluginInfo-Website=http://userbase.kde.org/Plasma/Tasks
+X-KDE-PluginInfo-Website=https://userbase.kde.org/Plasma/Tasks
 X-KDE-PluginInfo-Category=Windows and Tasks
 X-KDE-PluginInfo-Depends=
 X-KDE-PluginInfo-License=GPL-2.0+
diff --git a/attica-kde/kdeplugin/kdeplatformdependent.cpp b/attica-kde/kdeplugin/kdeplatformdependent.cpp
--- a/attica-kde/kdeplugin/kdeplatformdependent.cpp
+++ b/attica-kde/kdeplugin/kdeplatformdependent.cpp
@@ -202,7 +202,7 @@
 QList<QUrl> KdePlatformDependent::getDefaultProviderFiles() const
 {
     KConfigGroup group(m_config, "General");
-    QStringList pathStrings = group.readPathEntry("providerFiles", QStringList(QStringLiteral("http://download.kde.org/ocs/providers.xml")));
+    QStringList pathStrings = group.readPathEntry("providerFiles", QStringList(QStringLiteral("https://download.kde.org/ocs/providers.xml")));
     QList<QUrl> paths;
     foreach (const QString& pathString, pathStrings) {
         paths.append(QUrl(pathString));
@@ -214,7 +214,7 @@
 void KdePlatformDependent::addDefaultProviderFile(const QUrl& url)
 {
     KConfigGroup group(m_config, "General");
-    QStringList pathStrings = group.readPathEntry("providerFiles", QStringList(QStringLiteral("http://download.kde.org/ocs/providers.xml")));
+    QStringList pathStrings = group.readPathEntry("providerFiles", QStringList(QStringLiteral("https://download.kde.org/ocs/providers.xml")));
     QString urlString = url.toString();
     if(!pathStrings.contains(urlString)) {
         pathStrings.append(urlString);
@@ -227,7 +227,7 @@
 void KdePlatformDependent::removeDefaultProviderFile(const QUrl& url)
 {
     KConfigGroup group(m_config, "General");
-    QStringList pathStrings = group.readPathEntry("providerFiles", QStringList(QStringLiteral("http://download.kde.org/ocs/providers.xml")));
+    QStringList pathStrings = group.readPathEntry("providerFiles", QStringList(QStringLiteral("https://download.kde.org/ocs/providers.xml")));
     pathStrings.removeAll(url.toString());
     group.writeEntry("providerFiles", pathStrings);
 }
diff --git a/doc/kcontrol/keyboard/index.docbook b/doc/kcontrol/keyboard/index.docbook
--- a/doc/kcontrol/keyboard/index.docbook
+++ b/doc/kcontrol/keyboard/index.docbook
@@ -204,7 +204,7 @@
 <para>This is a &GUI; to help creating custom keyboard layouts for X11 using XKB.
 </para>
 <para>For more information please refer to the <emphasis>Links</emphasis> section on the
-<ulink url="http://www.freedesktop.org/wiki/Software/XKeyboardConfig">XKeyboardConfig 
+<ulink url="https://www.freedesktop.org/wiki/Software/XKeyboardConfig">XKeyboardConfig
 page on freedesktop.org</ulink>.
 </para>
 </sect1>
diff --git a/doc/kcontrol/spellchecking/index.docbook b/doc/kcontrol/spellchecking/index.docbook
--- a/doc/kcontrol/spellchecking/index.docbook
+++ b/doc/kcontrol/spellchecking/index.docbook
@@ -35,7 +35,7 @@
 <para>To use &sonnet; you need to install spell checkers like &eg; 
 <ulink url="http://aspell.net/">GNU Aspell</ulink>, 
 <ulink url="http://hspell.ivrix.org.il/">Hspell</ulink> or 
-<ulink url="http://hunspell.sourceforge.net/">Hunspell</ulink>
+<ulink url="https://hunspell.github.io/">Hunspell</ulink>
 and additionally the corresponding dictionaries for your language.</para>
 
 <para>The configuration options selected here can be overridden by each application.</para>
diff --git a/doc/kcontrol/splashscreen/index.docbook b/doc/kcontrol/splashscreen/index.docbook
--- a/doc/kcontrol/splashscreen/index.docbook
+++ b/doc/kcontrol/splashscreen/index.docbook
@@ -54,7 +54,7 @@
 <varlistentry><term><guilabel>Get New Theme...</guilabel></term>
 <listitem>
 <para>
-You need to be connected to the Internet to use this action. A dialog will display a list of themes from the <ulink url="http://www.kde-look.org">http://www.kde-look.org</ulink> website. Clicking the <guibutton>Install</guibutton> button associated with a theme will install this theme locally.
+You need to be connected to the Internet to use this action. A dialog will display a list of themes from the <ulink url="https://store.kde.org">https://store.kde.org</ulink> website. Clicking the <guibutton>Install</guibutton> button associated with a theme will install this theme locally.
 </para>
 <para>
 <screenshot>
diff --git a/imports/activitymanager/CMakeLists.txt b/imports/activitymanager/CMakeLists.txt
--- a/imports/activitymanager/CMakeLists.txt
+++ b/imports/activitymanager/CMakeLists.txt
@@ -14,7 +14,7 @@
 find_package (X11)
 set_package_properties (
    X11 PROPERTIES DESCRIPTION "X11 libraries"
-   URL "http://www.x.org"
+   URL "https://www.x.org"
    TYPE REQUIRED
    )
 
diff --git a/kcms/CMakeLists.txt b/kcms/CMakeLists.txt
--- a/kcms/CMakeLists.txt
+++ b/kcms/CMakeLists.txt
@@ -2,7 +2,7 @@
 
 find_package(Freetype)
 set_package_properties(Freetype PROPERTIES DESCRIPTION "A font rendering engine"
-                       URL "http://www.freetype.org"
+                       URL "https://www.freetype.org"
                        TYPE OPTIONAL
                        PURPOSE "Needed to build kfontinst, a simple font installer."
                       )
diff --git a/kcms/emoticons/emoticonslist.ui b/kcms/emoticons/emoticonslist.ui
--- a/kcms/emoticons/emoticonslist.ui
+++ b/kcms/emoticons/emoticonslist.ui
@@ -115,7 +115,7 @@
       <string>Get new emoticon icon themes from the Internet</string>
      </property>
      <property name="whatsThis">
-      <string>You need to be connected to the Internet to use this action. A dialog will display a list of emoticon themes from the http://www.kde-look.org website. Clicking the Install button associated with a theme will install this theme locally.</string>
+      <string>You need to be connected to the Internet to use this action. A dialog will display a list of emoticon themes from the https://store.kde.org website. Clicking the Install button associated with a theme will install this theme locally.</string>
      </property>
      <property name="text">
       <string>Get New Emoticons...</string>
diff --git a/kcms/kfontinst/CMakeLists.txt b/kcms/kfontinst/CMakeLists.txt
--- a/kcms/kfontinst/CMakeLists.txt
+++ b/kcms/kfontinst/CMakeLists.txt
@@ -6,7 +6,7 @@
     find_package(Fontconfig REQUIRED)
     find_package(Strigi REQUIRED)
     find_package(X11 REQUIRED)
-    macro_log_feature(X11_Xft_FOUND "libxft" "X FreeType interface library" "http://www.x.org" FALSE "" "Font installer and font previews")
+    macro_log_feature(X11_Xft_FOUND "libxft" "X FreeType interface library" "https://www.x.org" FALSE "" "Font installer and font previews")
     include(KDE4Defaults)
 endif ()
 
diff --git a/kcms/kfontinst/viewpart/download-unicode-files.sh b/kcms/kfontinst/viewpart/download-unicode-files.sh
--- a/kcms/kfontinst/viewpart/download-unicode-files.sh
+++ b/kcms/kfontinst/viewpart/download-unicode-files.sh
@@ -19,7 +19,7 @@
 mkdir -p ${1:-unicode} 
 
 for x in $FILES; do
-	wget "http://www.unicode.org/Public/UNIDATA/$x" -O "${1:-unicode}/$x"
+	wget "https://www.unicode.org/Public/UNIDATA/$x" -O "${1:-unicode}/$x"
 done
 
 echo 'Done.'
diff --git a/knetattach/main.cpp b/knetattach/main.cpp
--- a/knetattach/main.cpp
+++ b/knetattach/main.cpp
@@ -30,7 +30,7 @@
     QApplication app(argc, argv);
     KLocalizedString::setApplicationDomain("knetattach5");
 
-    KAboutData aboutData(QLatin1String("knetattach"), i18n("KDE Network Wizard"), QLatin1String(PROJECT_VERSION), i18n("KDE Network Wizard"),KAboutLicense::GPL, i18n("(c) 2004 George Staikos"), QLatin1String("http://www.kde.org/"));
+    KAboutData aboutData(QLatin1String("knetattach"), i18n("KDE Network Wizard"), QLatin1String(PROJECT_VERSION), i18n("KDE Network Wizard"),KAboutLicense::GPL, i18n("(c) 2004 George Staikos"), QLatin1String("https://www.kde.org/"));
 
     aboutData.addAuthor(i18n("George Staikos"), i18n("Primary author and maintainer"), QStringLiteral("staikos@kde.org"));