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.
dreed dared dread dried dured treed deaired droid tried tired tyred druid tread trued tared deride teared tarred toured derate teredo tiered terete hydrid dorado hydrate hydride hydroid tarried diorite deaerate dart dirt drat tret
reed pureed creed dreed breed greed freed treed preed jerreed jereed red gored leered erred queered feared quired cred eared hurried greet fared poured married pored sered garred jarred arete greedy bred soared pardee heired peered read pried fried zeroed uredo reread oared queried dread reedy cured bored chared toured buried trued wared cheered teredo whored choired worried churred sheared tarried shirred tiered shred tiaraed dared wearied ferried tared nereid burred lured jeered cored marred dried whirred bared roared serried varied furred curried soured reared sired curred haired tread mured sored fired pared oread cried credo faired parred waired neared redd rete aeried carried herried knarred juried aired geared hared caried gyred hired wried ired brede loured quarried rued barred foredo berried purred laired charred seared veered gnarred harried moored redo cered dured paired birred rared mired bread cared rede parried whirried wherried chaired deaired tried tyred warred chirred teared wired tired chored shared sheered tarred shored terete shrewd yirred
dree dare deer dere dire dore drew dure tree redear reedier retear deedier deter