I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
boutons buttons betons batons butenes biotins butanes boudins botanise botanies betonies bedouins beduins battens betaines botanize battiness bittiness badness bedunce
boutons mutons putons futons moutons tons jettons pitons batons ketones rattons tonus rhytons cytons photons buttons phytons newtons toons jetons udons tauons stones phaetons rattoons cottons voudons towns atones rutins muttons ratoons duotones tones setons betons nitons cutins tautens chitons
bouton botonee botonnee button buttony