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.
siesta cesta society zooiest cist zest cesti sayst sized zesty cestoi seised seized seaside suicide zoisite
fiesta siesta cuesta cesta vesta testa hygeist pesto feist feast testy rest reset gest gooiest hosta casita mozetta quest neist cassata west zooiest shiest chest weest testae test doest zest stay cesti staw setae vest seta heist nest pesty jest reest hest east fest beast hygieist zeta guest geste costa pasta best wriest peseta stoa costae mozzetta pest aceta resat resit wrest besot least zesty deist doughiest lest beset vista geest chesty yeast
sis seas diesis sizes sisses sices sees seesaw seis seise sews sice sissy size sues ices oses psis seesaws seises sises sissies dieses uses