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.
celiac salic slack slick selkie silica siliqua seallike siliquae
heliac celiac coeliac iliac lac click laic gallic lack killick lilac clack gallica plica lick oleic calico relic beylic flick silica slick toluic shellack ileac flic phylic phallic rollick pollack plack melic folic maiolica aulic alack klick malic colic cowlick black flack salic slack telic shellac sialic
cel ceil ceili cell cella cellae celli cello cilia ocelli