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.
stools stoolies sotols stoles stills steles stulls stalls stylus stales steals steels stiles styles citoles settles stellas stylise citolas steelies setulose seatless setulous sodaless sidles saddles seidels stylize sedulous seedless
tools stools retools diols toles modiolus doles dolls dols toils tolas tolus sotols footloose tolls phytols idols ketols metols rotls citoles stoles atolls citolas wittols
stool stoolie sootily sotol stole