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.
schist schizoid schussed
shist schist tachist itchiest techiest reechiest rushiest cushiest bushiest catchiest dashiest fishiest witchiest richest pushiest gauchest pitchiest poshest patchiest meshiest leachiest touchiest bitchiest gushiest lushest peachiest mushiest gashest chest dishiest botchiest pouchiest rashest beechiest poachiest shiest achiest ashiest beachiest tachiste tetchiest washiest chichiest
schizo schizy schizzy schuss eschews