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.
catlin cutline codlin cotillion cotillon
catlin ratlin chitlin vituline guideline chatelain dateline stallion setline ratline petaline codlin potline outline modillion metalline maudlin luteolin cutline vitelline cotillion talion outlain deadline daedalian sideline redline headline midline towline medallion battalion botulin vitellin hotline
catalo cattail cattalo cattily cattle coattail