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.
fowler fouler foolery fleer filer flier fueler faller feeler volery feller fleury filler fuller foliar fullery fueller flir floor volar flare filar flour flora viler fluor flair florae floury flurry valuer vealer veiler failure filaree filaria vealier filariae
bowler mewler bawler yowler fowler howler leer culler bluer jollier iller kneeler hellery healer feeler gallery lehr poler puller slier sealery veiler oiler heeler haleru hailer poller vealer flier feller reeler viler fleer killer duller oilier nailer wailer cooler millier pooler collier foolery dallier whaler seller tiller toller wooler woollier sealer dueler chillier sillier cholera sheller shoaler dialer yeller tailleur wilier gluer ceiler roilier jowlier helleri belier teller taller fullery plier ruler vealier rallier hiller railer sailer holier holler miller huller bullier clear haler hillier fueller caller filer blear galere bailer coalier hauler baller heller lowlier eelier muller relier realer gaoler mauler boiler faller volery jailer haulier fuller miler coaler fouler moiler filler biller pallier coiler paler mailer luller fueler lear peeler lier raillery sallier celery queller valuer loller giller dialler baler knoller bolero rulier puler taler mealier tailer tooler tallier dealer willer wheeler dueller tiler roller woolier siller chiller choler waler shalier shellier shoalier toiler palier
fowl flow foal foil foley folia folio follow folly fool foul foully