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.
sleaze sleazy sleazo slice soles slews slays slues sloes sales salsa seals slaws soleus solace sluice selles selahs sallies scillas sillies sullies sailless soilless soulless
sleaze laze lease blaze glaze please release sleazo sleazy chalazae
sale seal selah slaw slay slew sloe slue sola sole solei isle