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.
inanes ionones inions
inanes nones goneness linens jnanas canniness nanas mannans looniness oneness phoniness venines faineance pinones pennines raininess fineness banians saneness bananas sunniness boniness zaniness nowness doneness nonnews tawniness nuance tinniness coniines chinones quinines ninnies naans funniness quinones guanines loneness canines canoness ionones mooniness mananas penance venenes honans finance puniness pinenes nines runniness nance sonance nannies zananas bonniness zenanas nenes downiness newness tininess nans whininess conines shininess