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.
snood synod snoot snooty sand send sned snot sound sandy santo saned sonde scend snout snide sained seined signed sinned snouty snotty sundae sundew sunned zooned saunaed sent snit
snood nod dynode node nodi anode gentoo canoed conoid quinoid ganoid lianoid hymnody monody hypnoid snoot synod hyenoid