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.
spinet spined spinto spinate sapient spinout spent supinate spanned spawned speaned spondee spooned saponite spend spendy
spinet paint dipnet spinto spined repined reappoint viewpoint painty peined pined pineta pinot pained pinta pinto point pointe pointy punnet appoint bepaint opined repaint sapient pint depaint waypoint
spin spine spinney spinny spiny span spun supine