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.
aside azide acid ascidia acidy asset azido aced
side beside reside dayside wayside seaside aside quayside mysid site cissoid residue passade resid cosied missaid jassid pastie hessite naysaid postie tsade azide busied decide resite gussied sidh pesade said muscid viscid biocide daisied beastie sade suicide coesite resaid gneissoid zoisite deicide