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.
chalah challah chaleh challa chela chola cholla chelae chally challie shaly shoal chyle sheal shall shaul shale chiel cholo chile shawl chili chill chilli chilly shaley sheila shoaly shallow
galah chalah ala challa gala realia nullah alae blah fellah hallah calla coala zillah galea koala moolah mullah nala palea selah tala wallah qualia walla chaleh mollah challah
chai chao chaw chay chia chiao