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.
tracer tracery tarsier trouser trusser treasure treasury tressier tressour tressure dorser terser dresser dressier drossier drowsier
racer tracer bracer mercer farcer grocer grazer creaser coercer forcer fiercer farceur eraser pricier ricer brazer razer raser racier greaser grocery mercery pricer sorcery bracero piercer tracery
trace terais terce torahs toras trass trays trice truce strass straws strays