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.
rale rile rail rule rial role real riley rille rawly rally realia really rouille rouleau rely riel rill roil roll reel ruly relay reoil roily wryly
ale rale whale wale tale dale sale pale bale male quale kale gale hale vale shale al