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.
torten tortoni tartan tartana trodden triton tritone turdine teardown
hearten marten shorten torten chorten parton burton grutten brighten quartan greaten ratten retene rotten written rewritten garden harden martin ratteen cortin cowritten burden partan preteen protein tartan fourteen protean warden carotene carton
tort torta torte dorty tart tarty toroid torot torrid toured tret trite trot stored storied tottered