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.
fill fillo fille filly fil faille foil fail full fell file vill fila fall filo villi fella felly fully folly villa fellah felloe villae follow fallow fellow foully flu fly ghillie flea foal flue flaw flew viol vail feel floe flay vial fuel fowl fool vile veil flow foul fley feal flee ghyll voila viola phial feyly folio folia foley flawy voile
bill kill shill will dill vill hill ill gill jill fill maill quill mill nill pill rill sill zill till chill yill