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.
derma derm drama drum term dram dorm diorama diram durum dormy dream tryma dormie dreamy tarama trauma dayroom tearoom teraohm tram trim
herma derma uremia tryma tarama diorama serum germy derm seriema prima hyperemia maremma korma karma grama coremia germ rearm aroma hermae herm viremia fermi berme berm neuroma perm hermai drama term uraemia chroma
dear dearie deary deer deray dere derry doer