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.
levin leaven liven
levin feign devon seven savin ravin ovine mavin vain vein veiny vina vine vino viny avian avion bovine even caffein caffeine covin mayvin pavin ravine savine devein divine
lev laevo leave leavy leva levee levo levy lieve sleigh