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.
guessed gussied gusset guised cussed gassed guest kissed goosed caused gust gusto quest gusty gazed cased cosied cosset cuesta keyset coesite gaseity gazette gooiest quizzed
jessed fessed cessed yessed messed guessed feased moussed bussed knesset bossed massed peised fussed biassed passed pissed gessoed sassed sussed dossed tissued wissed cheesed hissed eased reissued mussed issued reseda kissed reused gussied lassoed reseed cussed ceased mossed leased gassed seised dissed teased tossed chassed missed
guess gauss gussie gussy agues