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.
protyl protyle partly pertly portal portly peartly prattle pretell proudly parietal prettily predial peridial praedial predella
protyl trotyl rootle rotl protyle
protea protei sprout prutah parodoi parody part party pert pirouette port prat prate pretty prod proette proud pruta purty uproot