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.
slicer solacer sleazier
policer slicer ulcer lacer glossier glazier glassier glacier classier flossier fleecier fleecer bluesier blowzier lacier blousier ballsier lousier lazier glaziery placer realiser sleazier blowsier realizer solacer chelicera
slice sluice sluicy sulci sylis