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.
salami salmi salaam slam slim slum slime slimy solum slummy
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
sal sail sale sall sallow sallowy sally saul seal selah slaw slay sola