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.
redraw redrew redry reader redder redear readier reedier ruder retro retry rider retire retear rooter rotter retore ridder rudder ritter rioter router rudery writer retiree reutter rootier rowdier ruddier ruttier
draw redraw dray drew dura hydra hydrae hydria fedora mudra redrew straw strawy deodara
red read uredia rewrite reread credo readd ready redd rede redia rediae redo reed reedy rued bred brede ired cred reared reroute rewrote uredo