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.
duotones dottiness doughtiness tautness detainees dittanies dowdiness teutonize tautens detains dudeens deadness detinues tetanies tidiness titaness tattiness dedans titans
atones tones duotones ketones stones tons cottons betonies betons tines moutons cytons fatness atonies meetness toonies phytons tonus phaetons fitness jitneys mutons donees retenes chutnees witneys phytanes soutanes tonnes retunes rattons jettons ratines poutines patness nitons neatness buttons hotness photons towns mootness boutons futons batons stanes tautness butenes tunes tynes ketenes mutines butanes quietness jetons routines whatness toons muttons newtons patines pitons putons ratoons rattoons retines rhytons cetanes setons attunes wetness witness chitons chutneys