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.
griller grillery grueller cruller kruller grueler growler growlier crueller caroller curler quarreller caroler coruler crawler crueler curlier crawlier corollary quarreler
brailler triller driller shriller friller griller grillery whirler crueller raillery drollery reroller birler frillier kruller frailer rallier grueller roller cruller derailleur roilier caroller droller broiler trailer railer troller quarreller
grill grille gorilla gorily grail krill