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.
flowery flower follower flawier
lowery flowery shallower willower slower lower bellower billowier blower blowier flower hallower follower hollower callower glower mellower plower sallower wallower willowier yellower