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.
unlead unled unlade unlaid unload unoiled unlet unallied unnailed unlit
unlead kneeled renailed paneled canalled kennelled vanload funnelled inlaid finialed funneled annulled unlaid unallied unled tunneled unnailed download channeled snelled aneled knelled naled snooled snailed panelled kenneled onload knolled nailed canaled nulled nielloed nilled annealed unlade unload tunnelled unoiled toenailed channelled