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.
retape retype redip
tape etape wattape watape retape tap type tope stupe biotope stipe tapa taupe biotype atap retype cotype stope metope watap neotype potpie
ret arete treaty tread reared oread great create fretty fret bready bread rota read retie rete reata ready readd pretty dread treat tret