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.
bear bar bare beer bier boar berry beery barre barrio bewray barrow bureau bra bur brr bro bury bree brae braw brew biro brio brie buhr brrr bura bray bore bora boor brow burr broo birr byre brugh burgh burro burry
bear ear shear wear tear dear sear rear pear near lear gear hear fear year ar er