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.
coleus coles colies cols coulees collies coolies colas cowls coals coils clues cools clews coalless coalesce colessee clause caules calesa callus coalas coulis callees goalies callous colossi cullies goalless coulisse cauls koels cloys glues cloze gules gaols close calls kolas kales clays calos goals glees class kolos gleys kohls colza culls claws gales callas classy galeas kayles gallus cullis guiles quolls caulis koalas keyless kellies gallous killies gullies cullays callose gallies galleys queleas gulleys galleass keelless
ileus pileus coleus soleus malleus les lulus helloes boules voiles villous bowless holes lies clues jawless haloes flees queleas gillies keelless joles hueless boles holloes gullies lues polies males cullies galleys caules less rouilles feeless phallus riles calesa poles flues kellies coulees files floes leis pleas callus haoles coolies wyles dollies valleys fleas glues melees callous muleys doylies bailees leas reales awless kayles mailless bales hoyles bolus goalless bialies tallies pilous teles tieless miles dewless toles pulleys tuilles tulles sulus wales doolies dalles wellies wallies wheelies sallies whiles doilies wiles woolies chalehs pollees chiles tailless chillies chylous shoeless galeas sailless rouleaus sillies molies flews soulless poilus oleos villus allies roles sloes toeless bailies soilless leys ballies toolless piles flies lees lollies heelless foleys rallies filles mooleys ales vales gulleys billies blues nellies fillies jellies mulleys glees rales hales muhlies solus gules lilies mules plus goalies joyless milles guiles doolees bless joules colies baileys pales felloes tailles plews ghillies rules deles jollies dailies moles gales hilus oles mealless bullies bullous aloes allees lawless boulles boughless voles fleys gallus folles fellies vowless belies gallous hulloes pilaus viewless collies clews coalless hilloes values ghoulies bellies hollies plies lieus halloes gleys belles mallees volleys mailes sullies failles pules pileous rilles sales soles toiles flus poleis biles mollies follies coles gelees gallies pilus mealies peles alleys milieus dellies killies callees dales holies kales toyless selles wayless slues rayless tellies tiles jealous dillies tolus relies tules ulus zealous walies doyleys dallies talus whales wheelless slews wholes doles willies woollies challies keyless chilies tales chyles shales yules
cole col coequally coyly coulee clew clue coal coala coaly coil collie cola colly coly cool coolie coolly cooly cowl coequal ogle