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.
harems hareems harms herms
rems harems germs jorums arums rams arms rums roms crams rims forums fermis firms formes barms herms carroms dreams reams kormas charms norms warms trams grams kermes larums dorms durums prams cremes proems serums dermas derms rearms berms aurums seriemas ihrams harms vermis bermes hareems biremes forms creams forams ferrums farms brims breams caroms jorams corms vermes drums drams dirams dermis zirams proms gorms prims terms marrams quorums kermis karmas trims worms perms chirms