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.
calories calorize glories claries galores colorize colors clours galleries claroes clerisy glorias collieries colours colures galeres callers coalers glorious couloirs colliers gallerias glares claros clears coilers collars coolers cullers gaolers glaires glairs gluers
calories lories glories pillories claries sealeries calorize celeries milliaries valorize colorize voleries glorias galleries collieries flurries valorise fooleries lorries loris phyllaries pelorias galores helleries railleries lores salaries fulleries slurries
calorie calory clour color galore