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.
safaris suffaris sofars zaffars savories savouries savers savors zaffirs saviors savours zaffers suffers zaffres saviours savorous severs sivers sighers spheres syphers
safaris suffaris chivaries gharris fares faros fears fiars fries frise farci ovaries afars fairs affairs aviaries vivaries covaries refries sofars varies varias zaffars shofars