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.
peso pes pehs pews piso pees pies peas poesy psoae paseo peise hypes pease psoai pis pus psi pas poos pace pass hyps puss pias pice pays pows posy pose pois paws pase piss puce pious hypos paisa paise piece passe peace poise poohs posse pause pacey pussy