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.
guarantee grantee guaranty granite grandee grant courante gurnet garnet grained groaned currant granita courant carinate couranto craniate grunt grand craned carnet cairned groined coranto grinned greened current crinite kernite careened crannied carronade grind
grantee guarantee warrantee courante grandee granite uranite rant