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.
boart bort borty board barite baryte borate barret baryta brat bard brit brut barrette bored bared beard bruit barde broad britt brute buret beret barred berate bright bratty boride byroad burette bourride bird brad bred burd
boart ort art wort tort torte tarot tarty sort dart hart kart peart part warty short forty mort quarto groat quart carte caret hoard hearty heart quarte forte korat bort airt fart arty carat party fort karat court cart mart board borty aorta port sorta dorty tart torot torta wart whort chart shorty
boar bar bare barre barrio barrow bear boor bora bore borrow bourree kbar