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.
jams jambs jambes jammies jumbos jemmies jimmies gems gyms geums
bams pams shams whams tams dams seams roams reams rams loams beams lams gams cams jams hams foams teams chams yams