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.
charr charro charry char chirr churr chary chare chair chirre churro cherry share shirr chiro cheer chiru shear choir chore cheero cheery chorea sharia sherry cheerio shariah shri
charr gharri shear churr chary charro chare chair tarry parry gharry haar hair hare harry barre hoar carr carry quarry marry gnarr knarry parr tarre whirr char hear charry chirr share shirr
chai chao chaw chay chia chiao