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.
reata raita riata rat ret read rota rate rete rato rhyta redia ratty readd retie ready rediae rut rot rad red raid rite rede ride reed rode redo road redd riot rote roti roto rout rued root rude writ
reata eat eta peat beaut beat peaty raita feat seat riata setae data wheat chaetae cheetah beta betta feta kata heat neat satay pieta seta geta zeta meta teat meat chaeta meaty cheat chetah