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.
turgor trocar trigger dragger torquer tracker trekker tricker trucker draggier dreggier trickery trickier
turgor rigor rigour fairgoer foregoer forgoer
terga touraco trig trigo trog trug turaco turacou turk turkey