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.
shamas shammas shams shames shawms shamos shamus shamois shamoys shammes shammos chams shims shammies shmoes chamisa chamise chamiso chamois siamese chammies shimmies shmooze
camas mamas llamas amas gamas shamas lamas mas lemmas omasa gambas lambs hamza names kames maims bams mambas amis caeomas masa jams ramus loams lams roams commas bemas amahs mammas mays lames seams shawms shams shammas camass whams wames tams tames doumas dames zamias somas bimas pams cymas loumas hames pumas gams nomas cames hyphemias iambs pneumas amias haems amus maes limbas hams foams gamays gambs lamias maws mass cams fames gummas gaums biomass mommas jambs chams beams amass limas moas wamus camos simas bimahs aims nemas gammas pimas lumas games rumbas reams comas summas sambas zymase dams dumas tamis teams rams shames shamos shamus yams
sham shame shammy shamoy cham chammy shawm shim shimmy shmo schmo schmoe