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.
caroller caroler cruller crueller curler corollary coruler crawler curlier crueler griller growler kruller quarreller crawlier grillery growlier grueller quarreler grueler
caroller troller droller roller reroller frillier grueller droolier derailleur caroler raillery rallier brailler broiler friller prowler growler griller crueller driller grillery quarreller drollery cruller triller kruller shriller
carol caroli carl cariole carle corolla creole criollo scroll