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.
sorer soarer sourer sorrier serer surer searer
borer corer poorer sorer frere career tearier eerier crore arrear darer fairer farrier fuhrer farer airier sharer frore charier furrier merer trier ruer carrier drear hurrier airer firer harrier parer sheerer cheerer wirier warier torero tarrier direr sourer serer roarer querier rarer prier quarrier currier hairier aurorae wrier leerier verier marrer mirier nearer firrier aerier courier wearier rearer bearer sorrier burier searer drier hearer moorier truer carer furore charrier hoarier varier beerier crier pourer freer hirer rear jeerer orrery fuehrer barer queerer fierier shearer wirer fearer frier merrier marrier lurer brier gorier parrier learier burrier dearer terrier burrer cheerier purer soarer curer barrier surer dourer tearer tourer wearer worrier yarer
sore saree sere sire siree soar soiree sora sori sorrow sorry sour sure