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.
calami calm clam kalam claim kalmia clammy culm glam qualm climb clomb gleam clime gloam cleome coelom gleamy kalium qualmy coelome coulomb gallium kalimba
salami calami lam slam blame glam claim fleam flamy flame flam filmi elemi blam gloam alamo loam lame lamb fullam lama clam gleam kalam salaam llama kalmia salmi lamia ulama
call coala scall scale galah gala cola coaly coal calla clay claw caul calo callow callee scaly