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.
summaries summarise summarize summers simars smears samaras sambars simmers samurais cymars samburs seamers seemers zamarras zamarros
summaries mares marries ambaries ambaris ambries emeries memories mummeries remarries summarise summarize daymares tamaris mars