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.
ballsier blousier blowsier bluesier blesser balisaur blowzier blazer
ballsier flossier slicer realiser pulser policer glossier glassier closer classier falser laser bluesier blowsier blousier lousier loser realizer dialyser
ballsy balls bals baals bails balas bales ballies balsa bawls bells bills bolls bulls