diff --git a/src/plugins/extensionmanager/CMakeLists.txt b/src/plugins/extensionmanager/CMakeLists.txt
index 094c1eb7d91..56236df9fb7 100644
--- a/src/plugins/extensionmanager/CMakeLists.txt
+++ b/src/plugins/extensionmanager/CMakeLists.txt
@@ -5,6 +5,8 @@ add_qtc_plugin(ExtensionManager
     extensionmanagerconstants.h
     extensionmanagerplugin.cpp
     extensionmanagertr.h
+    extensionmanagersettings.cpp
+    extensionmanagersettings.h
     extensionmanagerwidget.cpp
     extensionmanagerwidget.h
     extensionsbrowser.cpp
diff --git a/src/plugins/extensionmanager/extensionmanager.qbs b/src/plugins/extensionmanager/extensionmanager.qbs
index 0d5fa5cb259..994d75f7366 100644
--- a/src/plugins/extensionmanager/extensionmanager.qbs
+++ b/src/plugins/extensionmanager/extensionmanager.qbs
@@ -13,6 +13,8 @@ QtcPlugin {
         "extensionmanagerconstants.h",
         "extensionmanagerplugin.cpp",
         "extensionmanagertr.h",
+        "extensionmanagersettings.cpp",
+        "extensionmanagersettings.h",
         "extensionmanagerwidget.cpp",
         "extensionmanagerwidget.h",
         "extensionsbrowser.cpp",
diff --git a/src/plugins/extensionmanager/extensionmanagersettings.cpp b/src/plugins/extensionmanager/extensionmanagersettings.cpp
new file mode 100644
index 00000000000..54f4920181c
--- /dev/null
+++ b/src/plugins/extensionmanager/extensionmanagersettings.cpp
@@ -0,0 +1,59 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "extensionmanagersettings.h"
+#include "extensionmanagertr.h"
+
+#include <coreplugin/coreconstants.h>
+#include <coreplugin/dialogs/ioptionspage.h>
+
+#include <utils/layoutbuilder.h>
+
+namespace ExtensionManager::Internal {
+
+ExtensionManagerSettings &settings()
+{
+    static ExtensionManagerSettings theExtensionManagerSettings;
+    return theExtensionManagerSettings;
+}
+
+ExtensionManagerSettings::ExtensionManagerSettings()
+{
+    setAutoApply(false);
+    setSettingsGroup("ExtensionManager");
+
+    externalRepoUrl.setDefaultValue("https://qc-extensions.qt.io");
+    externalRepoUrl.setReadOnly(true);
+
+    useExternalRepo.setSettingsKey("UseExternalRepo");
+    useExternalRepo.setLabelText(Tr::tr("Use external repository"));
+    useExternalRepo.setToolTip(Tr::tr("Repository: %1").arg(externalRepoUrl()));
+    useExternalRepo.setDefaultValue(false);
+
+    setLayouter([this] {
+        using namespace Layouting;
+
+        return Column {
+            useExternalRepo,
+            st
+        };
+    });
+
+    readSettings();
+}
+
+class ExtensionManagerSettingsPage : public Core::IOptionsPage
+{
+public:
+    ExtensionManagerSettingsPage()
+    {
+        setId("ExtensionManager");
+        setDisplayName(Tr::tr("Extensions"));
+        setCategory(Core::Constants::SETTINGS_CATEGORY_CORE);
+        setSettingsProvider([] { return &settings(); });
+    }
+};
+
+const ExtensionManagerSettingsPage settingsPage;
+
+} // ExtensionManager::Internal
diff --git a/src/plugins/extensionmanager/extensionmanagersettings.h b/src/plugins/extensionmanager/extensionmanagersettings.h
new file mode 100644
index 00000000000..ed6b2f2aec4
--- /dev/null
+++ b/src/plugins/extensionmanager/extensionmanagersettings.h
@@ -0,0 +1,21 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#pragma once
+
+#include <utils/aspects.h>
+
+namespace ExtensionManager::Internal {
+
+class ExtensionManagerSettings final : public Utils::AspectContainer
+{
+public:
+    ExtensionManagerSettings();
+
+    Utils::StringAspect externalRepoUrl{this};
+    Utils::BoolAspect useExternalRepo{this};
+};
+
+ExtensionManagerSettings &settings();
+
+} // ExtensionManager::Internal
diff --git a/src/plugins/extensionmanager/extensionsbrowser.cpp b/src/plugins/extensionmanager/extensionsbrowser.cpp
index da757c0bbfb..c90d2bb59a1 100644
--- a/src/plugins/extensionmanager/extensionsbrowser.cpp
+++ b/src/plugins/extensionmanager/extensionsbrowser.cpp
@@ -5,7 +5,7 @@
 
 #include "extensionmanagertr.h"
 #include "extensionsmodel.h"
-#include "utils/hostosinfo.h"
+#include "extensionmanagersettings.h"
 
 #ifdef WITH_TESTS
 #include "extensionmanager_test.h"
@@ -29,6 +29,7 @@
 
 #include <utils/elidinglabel.h>
 #include <utils/fancylineedit.h>
+#include <utils/hostosinfo.h>
 #include <utils/icon.h>
 #include <utils/layoutbuilder.h>
 #include <utils/networkaccessmanager.h>
@@ -399,14 +400,18 @@ void ExtensionsBrowser::fetchExtensions()
     // d->model->setExtensionsJson(testData("defaultpacks")); return;
 #endif // WITH_TESTS
 
+    if (!settings().useExternalRepo()) {
+        d->model->setExtensionsJson({});
+        return;
+    }
+
     using namespace Tasking;
 
     const auto onQuerySetup = [this](NetworkQuery &query) {
-        const QString host = "https://qc-extensions.qt.io";
         const QString url = "%1/api/v1/search?request=";
         const QString requestTemplate
             = R"({"version":"%1","host_os":"%2","host_os_version":"%3","host_architecture":"%4","page_size":200})";
-        const QString request = url.arg(host) + requestTemplate
+        const QString request = url.arg(settings().externalRepoUrl()) + requestTemplate
                                                     .arg(QCoreApplication::applicationVersion())
                                                     .arg(osTypeToString(HostOsInfo::hostOs()))
                                                     .arg(QSysInfo::productVersion())