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.
mascot massicot misact miscut muscat miscode misquote masked musket muskit mesquit miscued mesquite mosquito musicked
ascot scot escot mascot misact seascout massicot peascod muscat miscut scut housecoat sect scout scoot scat resect bisect dissect
mask masque miscue musca muscae