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.
marrier marrer merrier mirier moorier mirror merer
barrier sorrier worrier furrier merrier farrier quarrier parrier carrier currier charrier burrier harrier marrier tarrier terrier hurrier firrier prier rarer varier wrier hairier furriery orrery marrer gorier crier aerier curriery hoarier warier learier fierier brier burier briery tearier leerier wearier verier querier airier farriery arrear eerier moorier beerier drier frier mirier trier warrior derriere wirier courier charier burrer cheerier
maria marrow marrowy marry mar