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.
gutta guttae gutty gut gout gouty quota cotta cutty cottae couteau cut gad got gat gaed quit quad kata goat goad gaud gait gate gude guid cute gadi
gutta sutta uta putti rutty putto putt nutty lyttae butt butte butty vitta tutti jutty cottae vittae cutty guttae gutty quota lutea lytta mutt pitta betta tutty cotta putty shittah