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.
ut uta ute
beaut bout shout tut taut rut put out but ghaut phut haut hut jut cut gout gut lout maut mut knout nut pout rout daut tout ut shut