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.
ventail fantail fontal vandal phenetol vindaloo phenetole faintly
entail pintail fantail ventail dentil genital daintily gentile fontal quintal ponytail lentil gentil quintile natal notal cental entoil quantal cantala pantile quantile neonatal pontil jauntily rental lanital centile cantal dental mental until