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.
flamer flamier filmer filmier flummery fulmar
blamer lamer flamer gleamer slumber clammer polymer clamor plumber filmier filmer qualmier gloomier glimmer palmer slummier plummer clumber lumber flummery elmier claimer bloomier calamar bloomery slimier slammer loamier gleamier slimmer malmier plummier clamber palmier balmier clammier glummer glomera plumier limier slummer glamor bloomer limmer climber calmer haulmier flamier lamber limber telomere
flam flambe flambeau flambee flame flamy film filmi filmy fleam flume aflame