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.
prase praise praus praos parse prose paras perse proas prise prays prese purse pursue porose peruse pros prez prossie pars pariahs purs press piers peris pares pores puris prize pyres prows prees price priss parrs prosy peers purrs proso pries peres paris pours pyros pears pairs pursy presa preys pross parous pierce porous paries hypers pricey pooris pareos piracy prissy purees pareus parries peeress peeries perries
erase rase gyrase prase phrase hydrase urase ras horahs frass jarrahs verse areas boreas brass raze brace ferias burse rais gerahs praus paras craws hurrays course peruse bourse koras corse arias perse maras crass bursae duras braze birse arrays brose surras graze braise cerias hoarse morays porose suras prays terras torahs derays torose praise soras trays trace rays ceruse urease rerise whereas charas sharias prise hydras craze sirrahs parse jersey prose pursue bewrays serais hoorays grass terais nurse douras kerrias auras muras arose arse morose horse moras hoorahs hearse mbiras morse morass braws curse wrasse crease race eyras trass grease hurrahs arras nairas horas carse sierras druse eras grace yttrias horsey forays varias ruse boras raise rise arise cuirass rias harass fraise lauras gorse norias kersey gyrose cruse grays brays drays murras prese braes rerose liras dourahs buras marse bras erose varas rose raws frays coarse draws sirras reraise purse surahs praos terrace terse proas cerise toras durras torse ureas frise ursae cirrose worse choreas tiaras
para parae prao prau pray proa spray