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.
foredoes fordoes fords fiords fortes forties frets forts fards farads fortis frites frauds ferrets fretsaw faradays ferities ferrates ferrites phorates varieties farts frats frits fritts fruits
redoes foredoes ureides uredos teredos reredos oreides nereides credos merdes heredes haeredes fordoes bredes redos redes weirdoes
foredo ford fared fiord fired fordo forte freed fried