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.
pentyl pintle pontil pantile pinitol pintail panetela ponytail panetella pointelle poundal panatela
pentyl faintly until dental saintly riantly pontil cantal mantle lintol fontal hantle gentil gentle gently jointly auntly cantle gauntly quaintly quantal quintal lentil lintel mantel mental pintle rental cental santol dentil wintle
pent peined spent spend punty pantie panto panty peanut peened pant pennate pend penned pint pinta pinto punt punto opened spendy upend