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.
fuel foul full flue fell feal feel feyly fully felly fella felloe fellow foully fellah fly fil flu flaw filo veal fail flow veil fowl fall foal fool fley flea flee fill foil vela flew file fila floe flay folia folio fille folly flawy foley fillo filly vealy ghoul value