--- a/cagou/core/platform_/base.py	Wed Feb 19 09:49:19 2020 +0100
+++ b/cagou/core/platform_/base.py	Wed Feb 19 09:49:20 2020 +0100
@@ -16,10 +16,13 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import sys
 import webbrowser
 from pathlib import Path
+import subprocess
 from urllib.parse import urlparse
 from kivy.config import Config as KivyConfig
+from sat.core.i18n import _
 from sat.core.log import getLogger
 from sat.tools.common import files_utils
 from sat_frontends.quick_frontend.quick_widgets import QuickWidget
@@ -69,8 +72,12 @@
         share_widget.close()
         return True
 
+    def _on_new_window(self):
+        """Launch a new instance of Cagou to have an extra window"""
+        subprocess.Popen(sys.argv)
+
     def on_extra_menu_init(self, extra_menu):
-        pass
+        extra_menu.addItem(_('new window'), self._on_new_window)
 
     def updateParamsExtra(self, extra):
         pass