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.
reason resown resin raisonne reassign raisin resawn reseen resewn resign resiny rezone raisiny risen rosin rosiny
reason mason weason season son foison disown resown fission peasen essoin poison passion meson lesson gossoon caisson basin sown soon sone liaison hyson bassoon mission cession boson scission azon sasin session bison
ras res rays raws rase raise rais reuse rees roes wrasse ares brass brassy crass frass creasy cressy grassy greasy prase prese rearouse reraise dressy tres tressy ureas eras reissue reis erase resay reseau resee resew resow rias resaw rues areas bras brassie ears ires crease cress grass grease ores presa press rears dress trass tress urase urease