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.
bulgy bilgy bulge biology bilge bludge bluejay
bulgy logy bilgy biology bulge elegy eulogy geology kludgy neology ology oology sludgy zoology
boule boulle buhl bull bulla bullae bully abulia