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.
repeals repels rappels replays replies replows repolls repulse reapplies replace ripples
appeals repeals peals pals appalls nopals appals peels pipals sepals spales copals lapels speels pleas spells tapalos tupelos cupels palls pawls keypals nopales opals rappels palsy appels repels peles pails spails spalls pales speils spiels tepals chapels