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.
daisies daises dassies disses diseuse tassies dizzies disease disseize doses disseise dazes dices dioecies daces disseisee disseizee dosses dieses teases douses dowses diesis disuse tawses tasses deices tissues tizzies doozies decease diocese diecious dozes duces taces deuces tosses touses tusses tussehs
daisies hissies liaises vises hisses easies posies rises pussies sassies peises poesies niseis sices sisses kneesies sizes missis hussies mioses disses misses wises bossies wussies busies bises biases seises lassies cuisses cosies guises poises raises poussies cissies noises pisses newsies sises hoises gneisses sissies missies daises meioses dassies mises tassies kisses wisses gussies chaises