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.
siemens semens saimins simians simoons sameness someones somans cymenes summons simonies symbions seaminess
semens siemens tameins demeans hemins lumens mensa mense menus miens amens hymens bemeans remans haemins gombeens lemans lemons limens lomeins omens rumens means immense cymenes daemons demons yamens