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.
appulse applause appels appals apples appalls appeals applies appaloosa appellees apollos
pulse appulse repulse puls pules pulis pulls copulas cupules papules papulose peepuls
appal appall appel appellee apple apply