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.
glaires glairs glares claries glories galeres claroes galores galleries gluers claros clears collieries collars glorias colures gaolers calories colliers couloirs glorious gallerias clours colors callers clerisy coalers coilers colours coolers cullers killers
glaires phyllaries willowwares milliaries milliares glares glairs claroes claries hollowwares flares lairs flairs filarees blares lares larees salaries yellowwares
glair glaire glairy glare glary gular aglare