Index: b/Lib/webbrowser.py
===================================================================
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -441,6 +441,14 @@
 
 def register_X_browsers():
 
+    # use xdg-open if around
+    if _iscommand("xdg-open"):
+        register("xdg-open", None, BackgroundBrowser("xdg-open"))
+
+    # The default GNOME3 browser
+    if "GNOME_DESKTOP_SESSION_ID" in os.environ and _iscommand("gvfs-open"):
+        register("gvfs-open", None, BackgroundBrowser("gvfs-open"))
+
     # The default GNOME browser
     if "GNOME_DESKTOP_SESSION_ID" in os.environ and _iscommand("gnome-open"):
         register("gnome-open", None, BackgroundBrowser("gnome-open"))
@@ -449,9 +457,13 @@
     if "KDE_FULL_SESSION" in os.environ and _iscommand("kfmclient"):
         register("kfmclient", Konqueror, Konqueror("kfmclient"))
 
+    if _iscommand("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"):
         if _iscommand(browser):
             register(browser, None, Mozilla(browser))
@@ -471,6 +483,11 @@
     if _iscommand("skipstone"):
         register("skipstone", None, BackgroundBrowser("skipstone"))
 
+    # Google Chrome/Chromium browsers
+    for browser in ("google-chrome", "chrome", "chromium", "chromium-browser"):
+        if _iscommand(browser):
+            register(browser, None, Chrome(browser))
+
     # Opera, quite popular
     if _iscommand("opera"):
         register("opera", None, Opera("opera"))
@@ -489,6 +506,8 @@
 
 # Also try console browsers
 if os.environ.get("TERM"):
+    if _iscommand("www-browser"):
+        register("www-browser", None, GenericBrowser("www-browser"))
     # The Links/elinks browsers <http://artax.karlin.mff.cuni.cz/~mikulas/links/>
     if _iscommand("links"):
         register("links", None, GenericBrowser("links"))