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.
poisons poisonous paisans puisnes paisanas paisanos passions piscinas piousness paesans puissance
bisons foisons liaisons poisons sons disowns essoins seisins mesons scissions gossoons reasons bosons puisnes hysons passions lessons fissions sones sonsy sessions bassoons seasons missions cessions cions masons caissons scions paisans raisins weasons