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.
teleost tallest delist duelist dullest duellist dialist dualist
teleost lost lest palliest fliest blest least holiest fellest jolliest lowliest coolest ruliest palest molest celeste sliest dullest closet eeliest foulest wooliest chillest shaliest shoalest realest coaliest bluest jowliest wiliest woolliest vilest oiliest bulliest mealiest volost halest hilliest illest shelliest chilliest fullest vealiest glost paliest poloist roiliest celesta silliest soloist tallest shoaliest
teles telos tieless toeless steles