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.
putout pouted putted puttied patootie petit patted petite petted pitted potato potted
cutout putout stout shutout setout tout shootout tut tot readout taut fadeout whiteout tutu stot stoat toot hideout stott redout wideout tote toit
put pout pouty ptooey putt puttee putti puttie putto putty sputa