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.
dressed tressed trussed drowsed drest direst dorsad driest dourest dearest durst traced triced truced truest diarist tierced trustee
caressed dressed pressed tressed harassed trussed greased grassed cuirassed crossed cresset reseed brassed versed reseda reissued prissed creased grossed reused chorussed
dress dressy dares daresay drees dries dross drossy dures duress tress tressy