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.
soucars sowcars scars scares sugars scaurs sucres scours squares sucrose soakers suckers sucrase scarious scariose saguaros squarrose scarce cigars scries screws sakers screes scores saggars sackers seggars squires saggers secures scurries skiers skirrs secrecy seekers
soucars cars decares sugars squares cares scaurs carrs carse guars acarus vicars jaguars lucres cougars mucors picaras picaros saguaros scares scars sowcars sucres daycares chukars