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.
seral serail serial sural serially cereal surreal ceorl sorel surly surreally saurel sorely sorrel sourly surely sorrily zoarial
feral seral frail narial neural burial goral queerly grail trawl loreal oral curial morale gyral merle boral horal coral beryl ureal earl chorial chorale cereal chiral woorali pearl aerial drail rural dural ferial viral boreal sural zoarial craal moral brail graal jural corral gooral crawl kraal irreal trail merl rial aural rail brawl ferly areal nerol mural serail loral derail surreal serial real oorali ceorl drawl herl peril trial gharial urial cheerly rale choral choreal parral sheerly
sera serai ser sear seer sere serow serry sierra sora suer sura surah user