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.
wheat whet what wet wat weet whit watt wait white whity whidah whydah whitey wad wed wit wot wade wadi wady weed whid wide wite woad
wheat cheat heat hat eat het what ghaut seat ghat neat whet haet peat hate sheet phat haut beat peaty reata head teat meat beaut meaty chat shat feat shoat