Multilingual Theme with 2 sets of menu/navigation

I’m looking for a theme or plug-in to go with my theme that will allow me to have an english and french version of each page in my website, with the ability to have the english pages using one set up navigation/menus and the french pages showing their french version of the navigation/menus. Currently, my theme only allows one set of fixed menus to be selected. I am trying to avoid having 2 sites, and 2 different URLS.