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.
relay rely really realia riel ruly reel real rawly rally riley roily reoil wryly rouleau rail rial rile rill roil role roll rule rale
relay belay delay lay nelly feyly felly fella eely belly mealy vealy flay allay cella tela telia waylay chela sheila flawy quelea cullay slay vela paella rely jelly seely clay selah play kelly delly newly telae telly welly chelae shelly