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.
cheer cheero cheery cheerio sheer cherry char shoer shear churr choir chore chirr chiro chiru chary chare chair charr shier charro charry chirre chorea churro sherry shri
sheer cheer her shier cheery veer shear cheero weer hear where doughier seer peer beery eery veery deer here hero hoer jeer queer queuer leer leery peery beer heir shoer