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.
cholera choler chiller shoaler chillier shoalier shalier sheller shellier
cholera boiler shoaler choler wooler toller roller poller pleura knoller loller gaoler galleria cooler coiler coaler holler bolero holier volery fowler fouler foolery bowler moiler oiler poler pooler toiler tooler woolier howler yowler
chaleh chile chola cholla cholo chyle acholia scholia