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.
barrio barrow brio burro barre bar burrow borrow brr bro brrr biro burr birr boar brow broo bare brie bear berry burry bourree bra bur
barrio arrow churro charro durrie cirri morrow marrow barrow borrow brio burro burrow farrow furrow gharri harrow corrie curio currie karroo kerria morro narrow sorrow trio cheerio yarrow