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.
purify privy purvey purview prof proof piroghi preview
aerify rarify verify horrify purify torrify terrify rif reify sherif riff turfy privy torrefy reif rarefy grief brief serif tariff griff rife sharif surfy sheriff
puri pur pariah peri pour pure puree purr spur spurrey spurry