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.
foliar flir flair volar flier flare filar fowler fouler filaria filaree foolery filariae velar fleer floor flour fluor flora filer flurry feller florae faller feeler floury fueler filler phylar fuller fleury volery failure fueller fullery vealier velaria phyllary
liar foliar lar rulier collar velar polar oilier claro biliary relier dallier chillier pillar tolar clear pallier sallier malar miliary glare gular molar shellier woolier talar slier ciliary phyllary jollier hillier belier haulier flair couloir milliary alar liri eelier bolar blear blare alary lier lire cellar jowlier holier lira flier bullier flir volar lear pilar filar salary lair vealier lari collier hilar clary plier coalier rallier phylar flare millier roilier lowlier mealier palier glair mylar milliare solar dollar tallier glary wilier woollier sillier shalier shoalier
folia folio foal foil foley follow folly fool foul foully fowl