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.
wholeness wooliness woolens woolliness wellness wiliness woollens
haleness maleness paleness wholeness vileness soleness lenes toluenes hilliness jowliness jolliness blueness fellness silliness holiness sullenness illness wiliness oiliness dulness wooliness chilliness wellness woolliness fulness dullness dailiness mealiness oleines alienness realness foulness fullness lowliness xylenes slyness coolness tallness dailyness glueyness leones chillness lens