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.
barytes barytas barites brutes boarts bardes barrettes borates berates barrets burettes brats bards borts brits bruts bredes boards bruits berets britts burets breeds brides beards birdies brights burdies borides burritos brattice bortz burds bourrides brads birds braids breads broads broods byroads hybrids
barytes barytas barites writes grates norites quartes parties curites garotes crates yperites prates cerates courtesy carates certes verites sorites hearties deaerates rites diorites rotes hydrates frites urates aretes rates borates cartes brutes ferrates garrotes narrates karates orates curates curtesy cowrites pyrites pirates rewrites gyrates berates cerites phorates serrates virtues sorties fortes derates ferrites dirties forties tortes aerates shorties