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.
cloner clownery cleaner colinear collinear gleaner culinary
loner cloner planner plainer milliner collinear clownery flaneur felonry eloiner byliner bilinear aliner lunier loonier aliener loaner linier liner linear leaner cleaner lanner colinear gleaner millinery planer sullener
clon clone clan cline clown colon colone coloni colony