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.
tachiste tachist techiest tetchiest touchiest dashiest dishiest
tachiste chaste dashiest rushiest pushiest poachiest mushiest peachiest gushiest leachiest cushiest catchiest itchiest fishiest touchiest techiest witchiest tachist botchiest shiest meshiest bushiest dishiest schist reechiest pouchiest patchiest pitchiest bitchiest shist achiest ashiest beachiest beechiest washiest tetchiest chichiest