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.
tetanise tetanies tetanize tetanus titanias titans dittanies teutonize detains titanous titaness detainees dedans deadens tautens deadness detinues tautness tattiness
botanise tetanise danios botanies botanize cutinise litanies ratanies dittanies tetanies tetanize titanias