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.
cumins cummins camions combines gumminess gamins caymans caimans gamines commons gaminess communes communise kamaainas commonness gammons kimonos commence gameness gombeens
amins diamins haemins cummins hemins saimins cumins gamins amboinas summons gamines mains humans romaines lumens daemons lomeins limns gnomons limans imines minus pembinas limens gammons yamens laminas simians omens semens famines lemons damans rumens muns amines remains romans remans caymans camions bambinos hymens somans mans diamines domines minis siemens mines ammines miens hymns lemans symbions damns domaines tameins womans mammons daimons minas combines homines amens kamaainas mons commons demons domains dominos tomans caimans shamans yamuns