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.
walnut
gallnut walnut lint relent glint gallant coolant callant gillnet gellant gelant lent volant flint silent blunt blent alant lunt violent plant sealant slant telnet elint talent cholent