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.
tonuses tenses tansies teniases tennises taeniases tenaces danseuse downsize teniasis deionizes duenesses dunnesses taeniasis tenacious dances dunces
bonuses anuses sinuses tonuses minuses nonuses onuses genuses venuses manses gnoses lionises penises nouses hypnoses lenses noses guanases rennases censes sanseis anises zoonoses tennises ensues senseis nauseas hanses senses tenses kineses geniuses joneses finises rinses menses pansies tansies quinsies ionises pensees mannoses kinases geneses linseys unsews