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.
cibol ciboule sibyl
cibol bola teabowl diabolo foible pibal bole boll bolo bowl aboil babool bible boil ghibli kibla libel obol obole oboli reboil sibyl diobol chaebol