diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -429,16 +429,23 @@ def register_X_browsers():
     # The default GNOME browser
     if "GNOME_DESKTOP_SESSION_ID" in os.environ and shutil.which("gnome-open"):
         register("gnome-open", None, BackgroundBrowser("gnome-open"))
 
     # The default KDE browser
     if "KDE_FULL_SESSION" in os.environ and shutil.which("kfmclient"):
         register("kfmclient", Konqueror, Konqueror("kfmclient"))
 
+    # The default XFCE browser
+    _xdg_current_desktop = os.environ.get("XDG_CURRENT_DESKTOP", "").lower()
+    _desktop_session = os.environ.get("DESKTOP_SESSION", "").lower()  # fallback
+    if ((_xdg_current_desktop == "xfce" or _desktop_session == "xfce") and
+        shutil.which("exo-open")):
+        register("exo-open", None, BackgroundBrowser("exo-open"))
+
     if shutil.which("x-www-browser"):
         register("x-www-browser", None, BackgroundBrowser("x-www-browser"))
 
     # The Mozilla/Netscape browsers
     for browser in ("mozilla-firefox", "firefox",
                     "mozilla-firebird", "firebird",
                     "iceweasel", "iceape",
                     "seamonkey", "mozilla", "netscape"):