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.
seitans sedans steins stanes stains setons cetanes stuns soutanes stannous seediness satins stanza stenos stance saddens sateens soddens soudans suddens zeatins soddenness suddenness cytons stones sadness
titans seitans sheitans shaitans witans tans reattains retains chitins stains rattans whitens detains pitons tetanus stanes soutanes ratans medians phytanes butanes attains tansy cetanes tains radians cotans chitons nitons gitanos