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.
datura dater datary detour tuatera deodara tuatara daughter doter deter tutor tatar tater tetra deodar tatter dieter deader dotter touter dotier tauter dietary dottier tattier tattooer
datura auteur tuatara detour suture stria straw satara nature mature couture hauteur future feature faitour betray doura dourah yttria tray tour tora durra dura latria mudra nutria stour stray sutra atria tetra tuatera
data date dato datto daut dautie dawt dawtie doat fatuity dated dauted dawted doated