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.
ramees ramies rams ramus reams rimes roams ramous rhymes romeos ramose roomies rummies rems rims roms rums rooms remise remiss rimose rimous rumbas
mammees ramees jemmies momes limeys games mammeys emcee gimmes cameos memes pomes mimeos jambes homes rhymes coombes lames biomes cammies mamies romeos homies comes mess mesa tommies siamese times shimmies shammes seems chymes chammies mummies wames dames amies rummies tammies neumes dimes dummies mews demes maes smews heaumes names mammies combes femmes femes roomies jammies jimmies nomes commies gambes rimes meze emes pommies fames immies kames bombes ramies limes hemes mameys homeys cames gimmies mems mimes neems gnomes zymes emeus demies mommies tames domes hames teems cymes deems tummies whammies fumes chimes shames semes shammies shmoes tomes yummies
ramee ram tram dram gramme grama gram crambo crambe cram frame arame romeo roam rime ream rammy ramie rami gramma pram drama uraemia