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.
forrit frit fort ferrite forte fruit forty fritt fruity ferret ferity ferried ferrate ferrety ford frat fart fret fiord fordo fried foredo fretty furred verite verity phorate variate variety
forrit worrit territ grit britt lariat writ fruit barite barret write norite parrot brit pierrot turret rarity garret cerite crit droit carrot riot bruit trait chariot horrid rite pyrite periti griot purity ferrite fritt ferity burrito ferret merit terret verite verity yperite parity frit curite rewrite cowrite diorite jerrid torrid trite krait heriot charity
for farrow ferry firry fora foray fore forwhy four furrow furrowy furry afore