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.
feel fell fuel feal flee fella feyly felly fellow fellah felloe flu fil fly floe filo veal flue full foal veil fool fowl flay foul flaw fall flew fley fill file vela foil fila fail flow flea fully foley folio filly fillo fille folly vealy flawy folia
eel feel heel keel kneel peel reel seel teel weel wheel el