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.
dons donsy donas downs donsie donees donnas duns dens dins dans tons donnees dinos towns dunes deans dines dense dynes denes tones toons dawns tonus tauons denies tonnes dienes danios dunness duennas toonies dueness townees townies tuns tins deionize dinghies tonneaus tans tens dance dunce tains tansy teens tense tines tunas tunes tynes
boons cons toons tauons zoons scions cions pons peons ons neons eons fons phons hons ions aeons goons paeons tons dons sons hysons poons pions noons coons muons moons mons loons lions kaons wons
don dona done donee donna donne donnee