diff --git a/Applications/DataExplorer/Base/RecentFiles.cpp b/Applications/DataExplorer/Base/RecentFiles.cpp
index 097568d059b2228d12935b4418eeea1710b7f3c3..3072737a10a9d623bc3c8fd7555b236df9265e49 100644
--- a/Applications/DataExplorer/Base/RecentFiles.cpp
+++ b/Applications/DataExplorer/Base/RecentFiles.cpp
@@ -5,7 +5,7 @@
  * \brief  Implementation of the RecentFiles class.
  *
  * \copyright
- * Copyright (c) 2012-2020, OpenGeoSys Community (http://www.opengeosys.net)
+ * Copyright (c) 2012-2020, OpenGeoSys Community (https://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license
diff --git a/Applications/DataExplorer/VtkVis/NetCdfConfigureDialog.cpp b/Applications/DataExplorer/VtkVis/NetCdfConfigureDialog.cpp
index 34af27d325e6fc74400f2a766048320580b6a777..e10708e06ee66db9aac774868e7dd27cf2530c0c 100644
--- a/Applications/DataExplorer/VtkVis/NetCdfConfigureDialog.cpp
+++ b/Applications/DataExplorer/VtkVis/NetCdfConfigureDialog.cpp
@@ -1,6 +1,6 @@
 /**
  * \copyright
- * Copyright (c) 2012-2020, OpenGeoSys Community (http://www.opengeosys.net)
+ * Copyright (c) 2012-2020, OpenGeoSys Community (https://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license
diff --git a/Applications/DataExplorer/VtkVis/NetCdfConfigureDialog.h b/Applications/DataExplorer/VtkVis/NetCdfConfigureDialog.h
index a194754ecbee3afcaf2c93a300de2a820f5fbc1e..a73d15c07bc8abf92893e0b115df3d9561169053 100644
--- a/Applications/DataExplorer/VtkVis/NetCdfConfigureDialog.h
+++ b/Applications/DataExplorer/VtkVis/NetCdfConfigureDialog.h
@@ -1,6 +1,6 @@
 /**
  * \copyright
- * Copyright (c) 2012-2020, OpenGeoSys Community (http://www.opengeosys.net)
+ * Copyright (c) 2012-2020, OpenGeoSys Community (https://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license
diff --git a/Applications/DataExplorer/VtkVis/VisualizationWidget.h b/Applications/DataExplorer/VtkVis/VisualizationWidget.h
index db48b6115832b1ba9ce88092837a52a12a6e6876..cadf4b5a0000c54f736417b7e2571a707fbbf43e 100644
--- a/Applications/DataExplorer/VtkVis/VisualizationWidget.h
+++ b/Applications/DataExplorer/VtkVis/VisualizationWidget.h
@@ -64,7 +64,6 @@ public slots:
     vtkRenderer* renderer() const { return _vtkRender; }
 
     /// @brief Sets the widgets cursor shape.
-    /// @see http://doc.qt.nokia.com/4.7/qt.html#CursorShape-enum
     void setCursorShape(Qt::CursorShape shape);
 
 protected slots:
diff --git a/Applications/DataExplorer/mainwindow.cpp b/Applications/DataExplorer/mainwindow.cpp
index 761c98400c137ef2a1be1a0523541554326e7495..6e2f36965993c8a99571531c1951011d871da563 100644
--- a/Applications/DataExplorer/mainwindow.cpp
+++ b/Applications/DataExplorer/mainwindow.cpp
@@ -5,7 +5,7 @@
  * \brief  Implementation of the MainWindow class.
  *
  * \copyright
- * Copyright (c) 2012-2020, OpenGeoSys Community (http://www.opengeosys.net)
+ * Copyright (c) 2012-2020, OpenGeoSys Community (https://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license
diff --git a/Applications/DataExplorer/mainwindow.h b/Applications/DataExplorer/mainwindow.h
index e34df4221c9f62ceb0e763d58f42bbe9c2b492af..1a201db3e722305bd8916ed03351ccb373e5f48d 100644
--- a/Applications/DataExplorer/mainwindow.h
+++ b/Applications/DataExplorer/mainwindow.h
@@ -1,7 +1,7 @@
 /**
  * \file
  * \copyright
- * Copyright (c) 2012-2020, OpenGeoSys Community (http://www.opengeosys.net)
+ * Copyright (c) 2012-2020, OpenGeoSys Community (https://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 93929975f315d2151bd81268f031864515945321..9e14f508668ae8bd15de6e830fa122546f678c9f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -40,7 +40,6 @@
 
 * [General GitHub documentation](http://help.github.com/)
 * [GitHub pull request documentation](http://help.github.com/send-pull-requests/)
-* [OGS Jenkins-CI server](https://svn.ufz.de/hudson/job/OGS-6/)
 * [OGS Styleguide][styleguide]
 
-[styleguide]: http://ufz.github.com/styleguide/cppguide.xml
\ No newline at end of file
+[styleguide]: http://ufz.github.com/styleguide/cppguide.xml
diff --git a/Documentation/bibliography/other.bib b/Documentation/bibliography/other.bib
index 6c83ad2c487aae3803c9751a4afd11c7e0c86085..3b8c3bd2de6af76225c2727e760cf153630c6602 100644
--- a/Documentation/bibliography/other.bib
+++ b/Documentation/bibliography/other.bib
@@ -55,8 +55,7 @@
   ISSN                     = {0961-5539},
   Keywords                 = {abstract this paper deals,at the geothermal research,darcian flow behavior was,finite elements,fractured rock,non-,non-linear dynamics,observed in pumping tests,of fluid flow in,pumps,site at soultz-,with theory and computation},
   Owner                    = {localadmin},
-  Timestamp                = {2015.06.10},
-  Url                      = {http://www.emeraldinsight.com/journals.htm?articleid=877229\&show=abstract}
+  Timestamp                = {2015.06.10}
 }
 
 @Article{Campbell:2008,
diff --git a/Documentation/mainpage.dox b/Documentation/mainpage.dox
index bbbd5d8cdcb19a87d23f5bd2e5d99ffce43b68a1..81621aabe702a457151b6686f4fdc467bc525b2b 100644
--- a/Documentation/mainpage.dox
+++ b/Documentation/mainpage.dox
@@ -4,11 +4,9 @@
  *
  * This page only describes the source code itself. See the following links for additional information:
  *
- * - Wiki: https://svn.ufz.de/ogs
- * - Developer guide: http://docs.opengeosys.org/docs/devguide
- * - Data Explorer (Gui) manual: http://docs.opengeosys.org/assets/releases/head/docs/DataExplorer-Manual.pdf
+ * - Developer guide: https://opengeosys.org/docs/devguide
+ * - Data Explorer (Gui) manual: https://jenkins.opengeosys.org/job/ufz/job/data_explorer_manual/job/master/lastSuccessfulBuild/artifact/DataExplorer-Manual.pdf
  * - Discussion forum: https://discourse.opengeosys.org
- * - Jenkins build server: https://svn.ufz.de/hudson
  *
  *
  * \section internal_modules Internal Modules
diff --git a/GeoLib/IO/XmlIO/Boost/BoostXmlGmlInterface.cpp b/GeoLib/IO/XmlIO/Boost/BoostXmlGmlInterface.cpp
index f24722bd472dcde4e7e676b6415b7bbfdb64c234..c414ad5a88cbce08dc7560e7438a46c8592ad8a0 100644
--- a/GeoLib/IO/XmlIO/Boost/BoostXmlGmlInterface.cpp
+++ b/GeoLib/IO/XmlIO/Boost/BoostXmlGmlInterface.cpp
@@ -287,7 +287,7 @@ bool BoostXmlGmlInterface::write()
 
     // put header in property tree
     pt.put("<xmlattr>.xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
-    pt.put("<xmlattr>.xmlns:ogs", "http://www.opengeosys.net");
+    pt.put("<xmlattr>.xmlns:ogs", "https://www.opengeosys.org");
     auto& geometry_set = pt.add("OpenGeoSysGLI", "");
 
     geometry_set.add("name", _exportName);
diff --git a/MathLib/Vector3.h b/MathLib/Vector3.h
index 004304a8c3dbb4506ee4b716d24d59cb218592fa..7d982e87209555ebc523358841f7daf2b1e72c38 100644
--- a/MathLib/Vector3.h
+++ b/MathLib/Vector3.h
@@ -3,7 +3,7 @@
  * \author Lars Bilke
  * \date   2009-10-27
  * \brief  Definition of the Vector3 class.
- *         From: http://www.strout.net/info/coding/classlib/intro.html
+ *         From: http://www.strout.net
  *         with modifications to derive from TemplatePoint
  *
  * \copyright
diff --git a/NumLib/DOF/LocalToGlobalIndexMap.h b/NumLib/DOF/LocalToGlobalIndexMap.h
index 88b23dcc6ce2d27190db068007e9f5afc0ac3db2..a05df32aab480cb5df5dcc5acb87f7b49d6653b4 100644
--- a/NumLib/DOF/LocalToGlobalIndexMap.h
+++ b/NumLib/DOF/LocalToGlobalIndexMap.h
@@ -44,7 +44,7 @@ class LocalToGlobalIndexMap final
 {
     // Enables using std::make_unique with private constructors from within
     // member functions of LocalToGlobalIndexMap. Cf.
-    // http://seanmiddleditch.com/enabling-make_unique-with-private-constructors/
+    // https://seanmiddleditch.com/enabling-make-unique-with-private-constructors/
     struct ConstructorTag
     {
         explicit ConstructorTag() = default;