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.
notal nodal natal nodally knottily nidal neatly nettle nettly noddle nodule noodle nattily nautili nuttily
notal dotal total cattail tail setal hotly footle foetal retail vital rootle fatal coattail chital natal stale motel steal metal fetal botel ratal tali hiatal tael teal rattail hotel modal cattalo coital tala tale catalo tall meatal tootle ritual luteal rotl petal sotol nodal stall mutual detail chaetal hyetal
nota not knot knotty note nowt anta antae snot snotty