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.
shunner shinnery shiner shinier sheenier shanghaier
funner dunner runner shunner cunner punner gunner winner tinner punnier shinnery cannery vanner cannier punier panner pannier wanner wennier ginnier conner dinner sinner tanner tenner tinnier tuner whinnier tonner bonnier tannery pinner funnier finnier fennier fanner gunnery penner lanner runnier canner ruiner banner sunnier ginner lunier nunnery manner hennery inner wonner