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.
agamas agmas agamous acmes
gamas agamas camas jicamas camass digammas degamis zygomas agmas sigmas comas caeomas wakames ogams cames leukemias camos leucomas gamays macumbas leukomas gummas magmas gambas dicambas degames zeugmas games scams gammas gambs dogmas gams cams leukaemias kames commas gaums chacmas