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.
gaudery gaudier guider gadder guttery cautery gater gutter gaiter gaydar guttier cattery goutier cadre coder cuter gator cater coater codder couter cutter goiter guitar kidder quoter cattier quieter quitter
gaudery rudery shudder udder sudary rudder lauder ruder powdery nuder mudder louder gaudier deray guider cautery judder feudary budder derry deary doddery chudder shuddery dry