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.
flamier flamer filmier filmer flummery fulmar
flamier gleamier loamier clammer slimier claimer plummier calmer palmier haulmier malmier flamer gloomier clamber filmier gleamer elmier lamber bloomier clammier balmier limier limbier lamer lambier blamer qualmier palmer plumier slammer slummier
flam filmi flambe flambeau flambee flame flamy fleam aflame