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.
claros claroes clears claries collars clours glares colors glairs colures coilers clerisy coalers colours glaires callers coolers cullers colliers glorious calories couloirs gluers collieries galeres galores gaolers glorias glories killers calorize colorize quellers
claros blares dollars polars oloroso molars glairs malars lares clears laris lars lears liars wallaroos tellurous chlorous dolorous lairs boleros claroes cellars pillars mylars milliares collars glares hollowwares velars blears valorous flares flairs tolars talars willowwares doloroso yellowwares
claro clary clear glare glary eclair