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.
cowbells cobles cobbles gabelles cabals cables cabalas gobbles cabbalas cabbalahs gables kiblas
cowbells bells bels libels waybills labels rubels gabelles rebills jebels obelus lowballs abeles babels bulls bolls bills belles balls rebels rubellas sawbills shoebills