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.
atones atonies atonias attunes adonis attains audience
tones duotones atones ketones stones betonies loudness badness retinues dynes sadness sootiness mutinies vodouns phytanes iodines battiness boutons donsy redenies redons denes nitons betaines routines toonies muteness jettiness lateness jitneys doughtiness moodiness tunnies tineas matinees hotness guidons newtons bittiness fatness rattons dittanies giddiness donas suddenness ratanies rottenness tawneys neotenies knottiness beadiness cottons retenes oddness cetanes goutiness ratoons pettiness tidiness udons wetness goodness whiteness stanes dunes witness wittiness woodiness quietness chitons putons chutneys shoddiness rowdiness tautness hiddenness denies atonies adonis tynes phaetons gaudiness meatiness haughtiness litanies futons towns madness leadenness townees dunness dueness nattiness rhytons fitness setons moutons tauons patness deadness neediness neatness townies batons pitons dons tawnies dines tines tons donnees detainees attunes fattiness downs godowns botanies mateyness photons mutines hoedowns cuteness rudeness cattiness lewdness tennies ketenes tonus tonnes patines jetons voudouns voudons tenues betons butanes retines rattoons mutons codons pottiness jettons nudeness codeines dowdiness muttons butenes headiness liteness donees lowdowns radons soutanes mootness voidness ruddiness toons dienes buttons readiness bawdiness dottiness matiness odeons meetness redness detinues kidneys phytons muddiness poutines weediness tetanies soddenness retunes ruttiness tattiness seediness nuttiness tunes titaness cytons ratines whatness wideness rootiness witneys woodenness chattiness chutnees reediness shadiness showdowns