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.
ganoid canid conoid gained canoed quinoid gahnite gonidia gaunt candy gonad caned cnida canto gunite kainit gunned coined gowned gannet cnidae cannot canned coigned conidia kainite quoined
conoid lianoid quinoid hyenoid ganoid hypnoid nod shinnied cnida poind node ranid denied snood hinnied nodi monied nidi phonied canid tineid whinnied monody honied anode synod dynode snide nide ponied hymnody canoed
gan canoe gaen gain gane gaun goanna guan guanay guano