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.
grue grey gree guru gore grew gar cru gor guar core kuru gory care grow goer gray gaur kore cure crew curie guiro gurry kyrie quare queer query quire