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.
typps typos types tups tops tips taps topes topos tapes tepas tapis tipsy tipis tapas topis taupes tepoys topees tepees tawpies teapoys teepees toupees daps dips dups
typps hypes yips yaps chuppas typos repps pops pips paps pappus nappes nappas quippus koppas kappas coypus hypos gypsy gyps hippos apps hyps peps poppas pups types cuppas shoppes yeps yups
typp tippy type typey typo typy