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.
leukons leakiness likens logans logons lacunas lagoons lagunas leggins ligneous likeness legginess lagans ligans lacunes lagunes
leukons kaons koans quoins beckons eikones eikons ikons reckons rockoons daikons weakons