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.
moral morale morally morel mural morula marl merl morelle morello morulae marly merle merely merrily
boral moral choral gooral goral loral oral coral horal rail trial derail trail orle neural serial graal craal ceorl narial zoarial urial seral corral brail rural drawl cereal sorel surreal zoril drail dural trawl whorl chorale chiral chorial jural rale rial burial poorly real sural gharial kraal oorali irreal aural areal gyral aerial serail loreal ureal parral feral frail curial morale crawl brawl ferial boreal morel viral grail woorali choreal mural shorl
morae mora moray mor mara moira moirai moire moor moory more morro morrow mura