diff --git a/src/common/dbus/org.kde.ActivityManager.Activities.xml b/src/common/dbus/org.kde.ActivityManager.Activities.xml
--- a/src/common/dbus/org.kde.ActivityManager.Activities.xml
+++ b/src/common/dbus/org.kde.ActivityManager.Activities.xml
@@ -9,6 +9,12 @@
       <arg type="b" direction="out"/>
       <arg name="activity" type="s" direction="in"/>
     </method>
+    <method name="PreviousActivity">
+      <arg type="b" direction="out"/>
+    </method>
+    <method name="NextActivity">
+      <arg type="b" direction="out"/>
+    </method>
 
     <method name="AddActivity">
       <arg type="s" direction="out"/>
diff --git a/src/service/Activities.h b/src/service/Activities.h
--- a/src/service/Activities.h
+++ b/src/service/Activities.h
@@ -78,6 +78,16 @@
      */
     bool SetCurrentActivity(const QString &activity);
 
+    /**
+     * Switches to the previous activity
+     */
+    bool PreviousActivity();
+
+    /**
+     * Switches to the next activity
+     */
+    bool NextActivity();
+
     /**
      * Adds a new activity
      * @param name name of the activity
diff --git a/src/service/Activities.cpp b/src/service/Activities.cpp
--- a/src/service/Activities.cpp
+++ b/src/service/Activities.cpp
@@ -51,6 +51,14 @@
 // Private
 #define ACTIVITY_MANAGER_CONFIG_FILE_NAME QStringLiteral("kactivitymanagerdrc")
 
+static
+bool infoLessThan(const ActivityInfo &info, const ActivityInfo &other)
+{
+    const auto comp =
+        QString::compare(info.name, other.name, Qt::CaseInsensitive);
+    return comp < 0 || (comp == 0 && info.id < other.id);
+}
+
 Activities::Private::KDE4ConfigurationTransitionChecker::KDE4ConfigurationTransitionChecker()
 {
     // Checking whether we need to transfer the KActivities/KDE4
@@ -143,6 +151,23 @@
             activities[keys] = Activities::Running;
         }
     }
+
+    QMetaObject::invokeMethod(
+        this,
+        "updateSortedActivityList",
+        Qt::QueuedConnection);
+}
+
+void Activities::Private::updateSortedActivityList() {
+    QVector<ActivityInfo> a;
+    for (const auto &activity : activities.keys()) {
+        a.append(q->ActivityInformation(activity));
+    }
+
+    std::sort(a.begin(), a.end(), &infoLessThan);
+
+    QWriteLocker lock(&activitiesLock);
+    sortedActivities = a;
 }
 
 void Activities::Private::loadLastActivity()
@@ -204,6 +229,46 @@
     return true;
 }
 
+bool Activities::Private::previousActivity()
+{
+    QString r;
+    {
+        QReadLocker lock(&activitiesLock);
+
+        for (int i = 0; i < sortedActivities.count(); ++i) {
+            if (sortedActivities[i].id == currentActivity) {
+                r = sortedActivities[(i + sortedActivities.size() - 1) % sortedActivities.size()].id;
+            }
+        }
+    }
+
+    if (r.isEmpty()) {
+        return false;
+    }
+
+    return setCurrentActivity(r);
+}
+
+bool Activities::Private::nextActivity()
+{
+    QString r;
+    {
+        QReadLocker lock(&activitiesLock);
+
+        for (int i = 0; i < sortedActivities.count(); ++i) {
+            if (sortedActivities[i].id == currentActivity) {
+                r = sortedActivities[(i + 1) % sortedActivities.size()].id;
+            }
+        }
+    }
+
+    if (r.isEmpty()) {
+        return false;
+    }
+
+    return setCurrentActivity(r);
+}
+
 QString Activities::Private::addActivity(const QString &name)
 {
     QString activity;
@@ -234,6 +299,8 @@
 
     q->SetActivityName(activity, name);
 
+    updateSortedActivityList();
+
     emit q->ActivityAdded(activity);
 
     scheduleConfigSync();
@@ -279,6 +346,7 @@
         // set another activity as current
         currentActivityDeleted = (currentActivity == activity);
     }
+    updateSortedActivityList();
 
     activityNameConfig().deleteEntry(activity);
     activityDescriptionConfig().deleteEntry(activity);
@@ -370,6 +438,8 @@
                                 + activities.keys(Activities::Stopping));
         scheduleConfigSync();
     }
+
+    updateSortedActivityList();
 }
 
 void Activities::Private::ensureCurrentActivityIsRunning()
@@ -471,6 +541,16 @@
     return d->setCurrentActivity(activity);
 }
 
+bool Activities::PreviousActivity()
+{
+    return d->previousActivity();
+}
+
+bool Activities::NextActivity()
+{
+    return d->nextActivity();
+}
+
 QString Activities::AddActivity(const QString &name)
 {
     // We do not care about authorization if this is the first start
@@ -494,13 +574,25 @@
 QStringList Activities::ListActivities() const
 {
     QReadLocker lock(&d->activitiesLock);
-    return d->activities.keys();
+
+    QStringList s;
+    for (const auto &a : d->sortedActivities) {
+        s << a.id;
+    }
+    return s;
 }
 
 QStringList Activities::ListActivities(int state) const
 {
     QReadLocker lock(&d->activitiesLock);
-    return d->activities.keys((State)state);
+
+    QStringList s;
+    for (const auto &a : d->sortedActivities) {
+        if (a.state == (State)state) {
+            s << a.id;
+        }
+    }
+    return s;
 }
 
 QList<ActivityInfo> Activities::ListActivitiesWithInformation() const
@@ -596,4 +688,3 @@
     QReadLocker lock(&d->activitiesLock);
     return d->activities.contains(activity) ? d->activities[activity] : Invalid;
 }
-
diff --git a/src/service/Activities_p.h b/src/service/Activities_p.h
--- a/src/service/Activities_p.h
+++ b/src/service/Activities_p.h
@@ -54,6 +54,9 @@
 
 public Q_SLOTS:
     bool setCurrentActivity(const QString &activity);
+    bool previousActivity();
+    bool nextActivity();
+    void updateSortedActivityList();
 
 public:
     void setActivityState(const QString &activity, Activities::State state);
@@ -70,6 +73,7 @@
     KSMServer *ksmserver;
 
     QHash<QString, Activities::State> activities;
+    QVector<ActivityInfo> sortedActivities;
     QReadWriteLock activitiesLock;
     QString currentActivity;