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.
retore retire retiree rotor retro retry retear redrew reutter rater redry rider ruder rotary ridder router reader rioter raider rudder ratter rooter redraw redder rotter redear rudery ritter writer rattier readier reedier rootier rowdier ruddier ruttier
tore retore store tor tory feature couture true tyre adore bettor tour satire torr quittor mature stare goitre trey moidore nature outre vetoer foetor viator story stoure suitor detour tutor metre mitre faitour retire tree future tora tire tare dore attire toro gator sautoir quatre tori meteor fetor litre motor nitre rotor satori sautoire stere storey stour strew suture titre shoetree
ret rato reata redo rete retie roto arete fret fretty pretty reroute tret