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.
agoras agrias agars aggers aggros agrees augurs agarose aggress auguries acres acarus across
koras agoras pakoras okras scores rigors picaras liquors gores lycras agrias gorsy kerrias grays grass jagras sucrase taquerias vigors gorse cuirass craws coirs scours rigours mucors raygrass vigours goers kors decors buckras cooers cores cors corse crass chakras
agora agorae agar aggro agree agria