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.
midline madeleine maudlin medallion metalline modillion medaillon
midline deadline redline headline sideline potline hotline guideline ratline delaine towline vitelline maudlin cutline codlin metalline outline petaline setline dateline madeleine vituline chatelaine