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.
timbales timbals tymbals tumbles tamales tambalas timeless tombless tamals tomalleys tameless tombolas tombolos tumulus tumulose tumulous dumbbells
timbales mailes umbles tumbles timbals tambalas sambals rambles nombles cembalos mealies ambles bumbles females fimbles chimblies wimbles fumbles humbles mumbles tymbals tombless males tamales cymbals numbles rumbles gimbals limbless gumballs gambles jumbles jumbals chimbleys wambles shambles
timbal timbale tambala tombal tymbal