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.
scientize sanitize sienites sonnetize scents cenotes senates sanitise cents centas scends centos saints suints sennets sennits sends snits snots
scientize entice quantize monetize hypnotize sanitize sonnetize unitize
scent sienite ascent cent sent