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.
pesade passade peseta posada peised peaced passado pest posed pesty pasta paced pesto pseud passed paused pieced pissed poised pseudo pst hypoacid
sade passade pesade tsade sad reside fossate posada misate costae naysaid dayside quayside testae missaid tsadi lysate side sadi passado sate fissate said resaid misadd seaside visaed dissuade aside beside wayside
pes peace peas pease pees pehs peise peso pews pies poesy psoae psoai apes opes peps