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.
habit habitue hobbit howbeit
habit bit debit sobeit rebait rabbity rabat bait bite bitt abet abut babbitt howbeit hobbit jabot cubit cubiti qubit niobite obit rabbit rabid sabot subito tabid