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.
teemer tamer timer timber timbery tumor dimer demur demure dimmer tamari tambur dumber dammer tumour doomier tamarao tamarau tambour tambura timarau tamboura tomorrow
seemer teemer bummer foamier hammer emery limmer jammer gamer dumber hummer emeer hemmer comber fumier lamer cumber mere ember rimier mimer number homier gammer gummier mummery emir roomier demur yammer ambeer shimmery shammer simmer chimere chimer mammer woomera womera timer limber omer summery rhymer roamer rummier rammier femur dimmer seamier boomier emmer camber gemmier somber maimer jammier gummer lemur gamier namer ameer aimer bomber camera vomer homer limier loamier comer lumber boomer lamber hammier gammier rummer humeri cummer omber beamier summer amber rimmer dimer fumer foamer rimer roomer rammer dammer smear reamer tamer gomer member timber umber wommera seamer chamber chimera doomier chummier shimmer mummer shmear yummier
teem deem team edema item stem stemma stemmy