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.
damar dammar daymare dammer tamari tamarao tamarau dimer demur tamer dimmer dumber tambur demure doomier tambour tambura timarau tamboura
damar mar chimar tamari dammar smear lumbar summary simar sambar cymar reamer nummary namer mimbar lamer mammary seamer maar foamer embar amir mare mara mair roamer samara gamer daymare tamer shmear