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.
gaudier gaudery guider gadder gaiter guttier goutier gater gutter gaydar goiter guttery quitter cautery cattier quieter kiter cuter gator cater cadre coder codder goitre guitar coater kidder couter cutter quoter cattery cottier quittor
gaudier judder reedier poutier mudder needier leadier lauder louder goutier guider gaudery tidier deedier weedier seedier chudder ruder shoddier rudder giddier bawdier budder ruddier rowdier readier muddier nuder beadier boudoir moodier hoodier faddier headier udder dowdier woodier suiter shadier rudery shudder