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.
trustee trust triste tryste trusty truest trussed tryst truced tourist turista torsade tressed tarriest torosity teariest tourista touristy durst drest driest traced triced direst tercet dearest diarist dourest dressed drowsed tierced