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.
safeties softies suavities savates sifts softs sovietize soffits soviets sapheads seafoods civets sights softas
naiveties safeties suavities softies nighties lefties righties nifties naughties naivetes moffettes mofettes levities cuvettes navettes fatties fifties eighties vetoes fouettes footies fetes cavities sovietize uveitis