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.
gremmy gremmie grimy creamy gramma gramme crummy gram gorm grum grim grama grime cream groom creme grume crumby coremia crummie gourami
gremmy rammy rummy germy creamy crummy maremma maremme dreamy
gore gree grew grey grue agree ogre