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.
furane furan fraena ferine fern firn ferny frena frown farina foreign
furane borane terrane crane ran carney pyrene lierne borne bourne byrnie gyrene sierran sciurine krone pyran arene serine narine purine crone brain buran prawn pyrone marine drone shoran urine trine tourney terrene terrain taurine neurone moraine barney drain saran cornea murrain purana pirana bran prone carnie parian guarani ranee irone rune brawn erne kerne furan gurney burnie grana rani groan gran serrano curran saurian journey guarana roan grain brine rain prune reran marrano murrine murine dourine larine durian neurine serene ferine loran terrine train drawn trone chorine terne shrine
fur feuar fora foray four frae fray furrow furrowy furry fury