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.
licht latchet leachate leched latched leached leeched letched
licht ratchet chitchat whisht wecht waucht sachet rochet rachet chat latchet cachet hatchet fitchet echt chit yacht
lich lichee lichi laich lech litchi loch lochia lych lychee cliche