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.
rambla ramble ramal rumble rumbly ramilie ramillie remail roomily
rambla jumbal dumbly sambal rumbly numbly ramble mumbly mumble kamala nimble gambol gamble wamble tymbal wimble tombola chimla timbal mola gimbal nimbly tombal tambala symbol cymbal jumble rumble bumble fimble amble fumble humble humbly wambly umbel chimbly tumble shamble
ram frame drama pram gramma grama gram crambo crambe cram arame ramee rumba roam ream rammy ramie rami gramme dram tram