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.
marram maremma maremme marimba
marram ram tarama drama diram ziram praam rami grama ream roam arame bream ferrum foram ihram frame joram carrom cram cream gourami gram paramo pram diorama dram dream tram
marrow marrowy marry mar merry murry maar mair mara mare maria morro murr murra murre murrey morrow myrrh