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.
trace terrace truce terce trice tierce tres trees trays tress tyres tores tires trews tares terse treys torse trues trass tries toras tarres terais terras triose torahs tressy torose tories hydrase tarries terries yttrias terrazzo tars tors trousseau
race terrace trace grace brace urase trice coerce tierce fierce raze terce source prase pierce graze gyrase braes farcie racy braze rase truce craze force bursae curacy orrice erase phrase hydrase price farce rice piracy ursae
terai tora torah tray straw strawy stray