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.
stellar stelar stylar stealer stiller steelier stillier staler styler sutler settler settlor sidler saddler
stellar patellar dollar dueller teller medlar medullar medullary modeller pedlar stelar tutelar tutelary yodeller
stella stall steal steel steelie steely stela stelae stelai stele still stilly stull