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