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.
igloos iglus
igloos callose zocalos secalose rugulose regloss gigolos bugloss calos close cloys cools gallous gallows gloss glows kilos kolos acaulose acaulous acoelous bacalaos callous nickelous reglows cyclos siglos dayglows