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.
stelar stellar stylar stealer steelier staler styler sutler settler settlor stiller stillier sidler saddler saddlery
stelar tutelar tutelary titular mutular titulary stylar radular pedlary pedlar patellar modular nodular stellar dollar medullary medullar medlar tolar talar dueler modeler yodeler
stela stelae stelai stele stella still istle steelie style stale stall stilly steely steal stole stull stile styli steel osteal