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.
resonate resinate reasoned resent resined resound rezoned reascent resigned recent resend reassigned rescind reascend resinoid
ozonate zonate passionate resonate senate sinuate sonata essonite fascinate hessonite caseinate laciniate masonite resinate dawsonite
reason resin resiny resown rezone arson