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.
violet volt violate valet volta volti voled filet volte vailed volute veiled vialed fillet vialled velleity vault filed fleet foiled folate fowled valuta fouled failed vaulty valued fooled velate foaled vealed filled filiate foliate folioed vallate valuate veloute
violet piolet let fooled millet quillet fillet collet cooled fleet poult bullet galleta volt volte holed jolty gleet cullet tooled howlet cleat chalet willet molto muleta owlet pallet leet toilet valet poled relet sallet soled doled boleti bolt coled bluet billet bleat blet jolt filet wallet pullet voled pooled sleet rillet dolt delete volta ballet gullet bolete pleat pellet palet mullet moult molt mallet gaoled wooled gallet culet colt callet holt volti toled shooled
viol viola ovoli vail veil vial vile vill villa villi villae voila voile vole volley evil evilly ovolo