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.
calumet calmed calamata calamite calamity columbite culmed climbed clammed claimed kalamata guillemet glimed climate gleamed glommed gloomed
calumet blumed flumed volumed helmet illumed guillemet pelmet plumed plummet relumed