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.
refries refires referees reifiers reveries refers reveres refroze reefers refreeze reoffers revers rivers ravers rovers reavers reivers reverse reverso rievers roofers reovirus rephrase rivieras roughers
fries refries feres fares fairies vivaries coiffures liveries ovaries ferries fires pufferies reifiers safaris savouries zaffres deifiers refires knaveries fores ivories frees froes furies gharries varies veeries aviaries frise covaries faeries reveries savories suffaris defiers chivaries
reefier refer referee refire refry reifier prefire