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.
spurreys spurries spurs spires sprees spores sprues spares sprays sapours spireas sparrows suppress spiraeas spurious spars superrace sapphires sparse sopors speers sapors sprucy spears speirs cypres spiers spruce spoors supers cypress sappers sippers soapers suppers saporous
spurreys parries perries preys koupreys spurries
spurrey spurry spur sparrow sparry