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.
gelato gelate gelati gelt gelada geld gilt gelid gelled
gelato lat fellate flat float vallate violate gelati elate bloat gelate malate gallate mulatto plait plate pleat rialto slate solate delate chelate cleat bullate blate gloat blat late balata alto alate latu velate lati folate collate bleat molto palate plat platy relate slat slaty dealate dilate cholate