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.
collars colliers claros clears colors cullers coilers coolers callers colures claries claroes colours coalers collieries couloirs clours glares glairs clerisy glaires gaolers killers calories colorize quellers gallerias galleries gluers galeres galores glorias glories
collars pillars dollars cellars lars hullers malars fellers pollers fillers fuellers hillers velars lollers claros flares molars glares quellers lullers millers mullers knollers fallers sellers diallers duellers tellers tolars willers shellers cullers mylars lares clears lairs ballers liars lears laris gillers flairs blears glairs killers rollers blares callers pallors fullers polars pullers billers hollers sillers hellers talars tillers tollers chillers yellers
collar collier colliery collyria