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.
stator stater citator stature citatory statuary sudatory sudatoria sedater staider stouter stutter steadier seedeater studier
mediator stator citator radiator laudator rotator auditory potatory tater additory stater sedater feudatory tutor coeditor sudatory dater auditor tatar natatory podiatry mediatory rotatory editor citatory matador seedeater laudatory detour toadeater
state statue stat stead stott stot stoat stet steady stadia staid stade sotted seated satiety sated estate