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.
viols violas veils voles vills vials vails voiles villus villas villous vowless villose volleys fils viewless fowls foals fools valse fills fouls foils files filos fails veals vales foleys ghouls filles folles fillos folios phials valise values filose follis failles fillies foliose folious follies follows valleys ghillies flus
viols diols maills folios olios rolls coils ails rails filos voiles foals dials howls holes coles fouls ghouls jowls bails milos polis sills quolls noils biles hails bilious hills nails heils violas jills miles poles bills lolls gills moils boils guiles vails folious bolas kolas pails bowls ceils whiles toiles oils wiles wools chiles pilus chills roils cholos sheols shills shools tills yills tolas tools pilis cools quails vials zills tolls mols polos kills soils dolls tails koels polys solus gaols riles moles rials nils mools lilos hilus molas sails piles kolos pols veils bolos joles molls fowls vills mailes fills knolls haoles bolls coals bolus roles riels pills quills phials files solos fools poilus goals colas mills foliose boles soles voles mils pools hols helios fils aiolis jails foils oles fails kohls polls cols deils tolus cowls sols noels ceilis kails dols mails souls nolos ills kilos dills polios moolas tiles wails silos toles doles rills wholes toils nills wills chiels owls chilis cholas reoils sheilas shiels shoals sials tils yowls
viol viola ovoli vail veil vial vile vill villa villi villae voila voile vole volley evil evilly ovolo