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.
betaine butane beton biotin botany butene betony beduin beaten botonee bedouin botonnee baton batten bidden bitten boudin bouton button buttony
betaine tain tine detainee stane soutane routine retine retain tinea attain butane phytane matinee mutine patinae patine poutine ratine reattain retinae retinue cetane stain detain detinue tan tin