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