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.
chest chesty chaste shiest cheesed shist chased chassed choused chowsed
hest chest ghast siesta best pest resat pesty resit least neist guest cesta wrest feast east feist zesty geest deist geste doughiest beset testa besot weest hist whist chesty shist hygieist cuesta vest fiesta nest reest pesto reset quest lest gooiest wriest rest cesti jest zest hygeist host zooiest gest doest hast test vesta testy heist west ghost fest beast shiest yeast
chess chase chasse cheese cheesy chews chez chis chose shes aches eches ichs