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.
pulse puls pules pulis pulls pilose plisse please pols pulleys pelisse plus pals peles plies peals palls plays pilus peels pilis palsy plows pills pales piles plews polls poles place polis polys pails ploys pools pawls polos pleas paillasse palliasse pileus pilous police palace poleis polios pilaus polies plaice palais poilus pilaws paellas pileous pillows pollees
pulse dulse dulls valise jalousie hulas nulls mauls joules mules cauls caules lulls culls bulls coulis pulls villose lose fuels rules fouls souls fulls xylose falsie dialyse false duals filose tules wauls shuls close pules gulls guls buhls pulis valse jouals hulls pilose mulls miauls callose clause caulis lulus gules puls hauls realise boules shauls ulus else lase blase duels doulas louse blouse delouse ghouls sulus lyse sauls yules
pul pula pule puli pull pulley