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.
deaden detain dudeen duodena detainee tauten tetany detinue dittany
laden leaden deaden den deni neaten dene odeon beaten radon fadein maiden sadden redeny sudden louden loden dudeen wheaten wooden shodden laten oaten dean midden bidden hidden sodden ridden redden paten deny hodden coden madden codein hoyden hoiden eaten duodena widen chidden hyoidean
dead dad dadoed dada daddy dado deed deedy died beaded duad headed ideate leaded readded readied readout deeded