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.
saggars seggars saggers saguaros sugars scars sakers scares scaurs cigars sowcars soakers sackers squares soucars scariose scarious squarrose scours scores screws scries scarce skiers skirrs sucres screes secures seekers squires suckers sucrase sucrose
eggars seggars muggars beggars saggars gars loggers hoggers foggers cougars muggers keggers sugars saggers taggers ruggers jaggers niggers baggers daggers doggers tuggers chiggers diggers waggers gaurs joggers naggers gaggers laggers luggers aggers huggers eggers jiggers hegaris agars riggers cigars jaguars buggers guars aggros muggurs chuggers
saggar sagger saggier saguaro seggar