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.
dacites diacids deceits decides daysides deicides deists tastes disseats deciduas diastase dusts dissuades tests diazotize deciduous testes testis toasts tsades tsadis tsetse tassets testacy testees
cites leucites recites ascites lucites miscites dacites cetes fascitis cecities sites suicides piosities pistes gaseities decides suites deceits coesites recits raucities biocides zoisites paucities cists hessites resites cities oocytes deicides