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.
raggedy ragged rugged rigged raked racked rogued wreaked rackety wracked ryked ricked reeked ragout rooked rocked rugate rucked recked recode racket rickety wrecked wricked
raggedy fugged gigged hagged vegged hogged nuggety ragged pigged rigged mogged nagged logged sagged zagged lagged digged gagged tagged jigged tugged jugged wigged igged shagged hugged bagged begged sogged bogged jagged egged fagged bugged pegged fogged pugged rugged mugged nogged figged lugged zigged legged dogged kegged togged jogged wagged cogged chugged biggety shogged
raggee ragg raggy braggy craggy draggy rag