If a widget title is not listed in the strings translations list table, it is most likely because the widget uses the old Widget API (WP < 2.8). Unfortunately, there is no way to make Polylang automatically compatible with all widgets which use this old API. Widget Text: Appart from the widget titles which should all be listed, only the text of the widgets Text are displayed in the Strings translation list table, except if other Widgets use the same filter. Note: remember that when the text of a widget is not translatable, it is still possible to have one widget per language. Translate URL slugs Polylang Pro offers the possibility to translate the URL slugs for the category base, the tag base, the post formats, the custom post types, the custom taxonomies, the author base… To know more about this functionality, see Translate slugs with Polylang Pro.