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.
rhymer rimer rammer reamer rimier rimmer roamer roomer rummer rammier roomier rummier rumor remora rumour
rhymer vomer chimere fumer mammer bummer timer number gammier mimer dammer emery cummer hammier seamer limmer omer emeer foamier emmer camera rammier gemmier gummer lamber ember homer woomera yammer shammer chimer womera teemer dimmer summer seemer rummier mummery shimmery limber lumber dumber smear roomier foamer aimer comer rimier gamier roamer jammier humeri hummer homier camber gummier jammer reamer comber beamier amber boomer rammer loamier seamier gamer hammer bomber dimer mummer gomer omber umber mere member fumier chummier lamer hemmer boomier limier roomer gammer rimmer cumber rimer ameer rummer somber tamer maimer shmear chamber namer cymar simmer summery doomier timber wommera chimera shimmer yummier