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.
slaws slays slows slews selahs sals sols sels scillas sallows salsa silos sills seals seels sylis sales sails sells sauls soles solos sulus soils solus sloes souls slues soleus sleaze selles sleazo sleazy solace sallies sillies sullies zillahs sailless soilless soulless
blaws flaws slaws laws bylaws pilaws claws las follows colas blows flays galas alias allows queleas halloas molas blahs clews moolas lase billows lass hollows villas mullas sallows plays cullays galahs plews hylas leas galeas scillas dalasi yawls shawls chollas chelas challahs willows wawls wallas tolas talas doulas slews lays zillahs pawls glias mollahs hulas relays glass hollas koalas lows nullahs blase paellas bolas awls balas hallows palais fellows quillais ollas hulloas pleas allays hilloas moolahs hallahs holloas violas kolas fleas fellas flows selahs bellows mellows callas glows belays clays bawls fellahs pillows mallows slows mullahs gallows belows nalas fallows boylas pilaus class alas plows flews coalas dahlias slays delays dulias tallows wallahs wallows waylays chalahs challas cholas shallows sheilas yellows
slaw selah slay slew slow sola