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.
ritzy ritz riots rites writs raitas riatas writes riotous rats rets rids rots ruts
ritzy ditzy dizzy tizzy bitsy ritz ditsy ditz
raita riata riot rite writ write brit britt frit fritt crit grit gritty trite