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.
porkies porks perukes parks periques perks prigs pricks parkas prex pirogues piroques prexy progs pyrex pargos percuss pyrexia
jerkies porkies darkies birkies perukes shrieks crakes turkeys eurokies trikes burkes darkeys rakis brookies rookies rakes drakes brakes trokes berakes turkois rykes shrikes