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.
maimer mimer mammer mimbar mummer mammary mummery member memoir memory
aimer mimer timer rimer dimer chimer maimer smear lamer cumber rimier omber gamier boomer mummery limbier comber emeer lamber gummer roomier seamier ameer simar emmer teemer rhymer camber limier mummer mammer dimmer limmer yammer shimmery shammer chimere number roamer chamber wommera wombier omer summer rummer dumber jammer fumer rummier bomber fumier gamer lumber hemmer dammer hammer gammer reamer namer rammier gambier homer comer homier jammier lambier beamier rimmer foamier amber boomier simmer cummer camera woomera summery gummier foamer hammier bummer mere rammer gemmier gammier seemer humeri loamier gomer somber limber vomer member ember chimar roomer womera seamer hummer doomier tamer timber umber emery chimera chummier shimmer shmear yummier
maim mim imam mimeo mime mammy mammie mammey mammae mammee mamma mamie mamey mambo mamba mama umami