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.
sucrose sucrase scariose sucres squarrose suckers soucars scars saguaros scries scarce scours scaurs scores screws sugars screes scares sackers squires sowcars squares secrecy scurries sakers skiers skirrs saggars saggers soakers
necrose sucrose squarrose grouse sucrase scariose recross carse macros lacrosse becurse agarose across curse rockrose carouse croze crows crouse crosse cross corse micros picaros cruse