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.
parral parrel parle parol pearl parlay pyrrol parley pearly parole parolee pyrrole payroll purl peril prill prole prowl poorly purely puerile purlieu
corral parral jural graal horal ferial feral ferrel burial brawl brail aerial oral loral gyral gooral moral zoarial mural serial choreal neural carrel parrel rural serail rale choral sural drail dural trawl ureal woorali crawl kraal gharial quarrel morale goral rail loreal viral areal barrel surreal aural frail rial real irreal grail curial craal narial chiral urial trial trail drawl derail sorrel oorali seral cereal pyrrol boreal boral coral chorale chorial
parry parr par pear sparrow spare spar purr perry pareu pariah pareo pare parae para pair sparry