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.
hairier harrier hoarier hirer hearer hurrier horary horror
airier mirier hairier wirier aerier furrier burier merrier firrier hirer fierier airer briery brier beerier barrier hurrier charrier worrier currier querier leerier moorier prairie sorrier direr tarrier terrier warier wirer drier gorier courier farrier wrier verier prier derriere burrier parrier farriery carrier hoarier frier furriery varier harrier charier tearier wearier crier firer curriery quarrier learier marrier eerier fairer trier cheerier