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.
glarier glairier clearer colorer colourer
learier blearier glarier leerier blurrier clearer glairier cellarer
glair glaire glairy glare glary gloria gular aglare