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.
disown dizen dozen design diazin tisane diazine
resown sown disown son snow resawn sone resewn reason cession meson liaison gossoon hyson sawn sewn soon passion essoin bison fission foison caisson lesson mason mission bassoon poison scission besnow session boson season weason
dis dais daisy dies dioecy disci diss adios idiocy odious didoes didos diodes dits ditsy