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.
pilis polis piles pails pills pilus plies pulis plisse poilus pilose polios pilaws pilaus pileus polies pilous palais poleis pillows pals pileous pelisse puls pols plus polls plews polys pales polos poles plays pawls pools pleas palsy peles ploys plows palls pulse peels pulls peals pules palliasse paillasse please police policy paellas pollees pulleys
pilis ceilis chilis lis biles bailies viols belies lilos foils mollies coolies tails kills jails reoils bills mails bails ghillies dillies hilus gillies hollies goalies ghoulies fils rills deils gallies silos pilus milos sails nails moils wellies fills boils palais kellies caulis ballies bialis cullies vials realise files jills polies riels tallis dailies rails quills sullies walies poilus dellies fellies doylies tils whiles chillies chills shiels sillies sials quails polis gullies follies zills valise diols hails fillies helios olios bialies dollies woolies phials noils mailes miles chiels challies chilies fails tiles toils collies willies vails gills lies vills leis quillais coils filos pulis sills heils colies molies billies alias jollies pails veils ails flies maills dills muhlies killies kilos aiolis glias holies hills nills mealies coulis allies mills lollies rallies kails lilies mils pills sallies bellies nils poleis tallies dahlias cullis riles dials folios oils delis rials jellies wiles relies ceils sylis nellies voiles polios bullies bliss follis aaliis dallies woollies ills wheelies challis wails wallies piles plies wills tills roils doilies toiles soils chiles dulias tellies guiles chillis sheilas doolies shills yills
pili pilei spile pial pilau pilaw pile pilea pail pillow pill pillowy pily plie poilu polio puli spill