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.
fluors flours floras floors fluoresce flirs flurries failures fliers fleers flares filers valors flairs fillers velures fellers fowlers valours feelers fuelers fallers fullers velours valuers filarees fuellers valorise valorous fooleries fulleries velars vealers veilers valorize voleries
fluors bailors pelorus gluers couloirs colours velures clours lores valuers loris lours lures allures dolors slurs tailleurs pylorus lauras bulghurs valours pallors galores colures colors velours jailors valors flours blurs floras floors failures soilures sailors dolours pleuras tailors
fluor fleury floor flora florae flour floury flurry