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.
jaguar jaggary jagra jagger jaggery jaggier jackaroo jagghery jacker jigger jogger jiggier jackeroo
guar jaguar gar sugary square figure seggar jaggary saggar voguer rigour vigour muggar vaguer ligure vagary cougar hegari beggar eggar gaur sugar soucar saguaro cigar muggur leaguer megara guru quare agar augur augury beggary chukar