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.
stirred starred stared stored sutured storied steered stereoed strode sturdy street stride stroud satyrid stretto striate strette steroid stretta stretti stearate saturate hysteroid start strut sturt strait strata strati citrate striata
stirred deaired tarred tarried tiered tired attired mitred retired starred deterred
stir satire stair starry astir