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.
houri hour hoar hora hoer hurry horah hoary hoorah hurray hooray hurrah her hare hear heir here hero hire haar hair
houri our tour tori dour sour sori pour ourie noria nori loury lour kouroi korai curio curie kauri curia coria giaour hour four oorie aurei poori puri souari zori doura torii your