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.
nerts nerds nertz neuritis nereids nereides nards nurds norites narrates
verts cherts nerts hertz crits artsy arts grits marts karts forts carrots frets farts greets curets orts garrets quartes grots aretes virtus hearts writs tarts airts fortes korats shorts tortes sherds territs charts worrits parrots warts trots treats pierrots aortas carts prats ruts quarts derats drats bruts sorts morts girts rets rots cruets brits jurats courts brats nertz cartes frits quirts worts herds tarots nerds carats greats barrets burets harts frats merits terrets curtsy vertus shirts fortis dirts ferrets rats karats quartos kurtas ports boarts darts keiretsu carets parietes hurts berets tortas certes torts trets borts turrets whorts parts yurts
neared nerd nerdy nereid neuroid aneroid inert