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.
rails reals roils riels rills rales rials riles rilles reoils reales realise rayless rallies rouilles reels roles rolls rules relays relies realize release rouleaus
bails tails wails vails pails nails kails rails jails mails quails fails hails sails ails als jouals kales nills ills files fils cauls boils aals lalls veils heils foils riles mills kilos gills ales jills coils liaise calls dials hales vales hauls halos palls tills reals bills sills dahls veals riels palsy palais hills tales nalas mils galas zills sauls wawls teals talas soils wills chiles deals chills shauls taels sheals toiles shiels shoals yawls walls milos malaise gales talls peals lilos calos quills pales dales whiles moils whales gals biles galls diols meals pilis gaols sals bales pawls falls miauls pilus males duals maills noils awls baals talus fills toils coalas alas filos rills zeals halls coals roils reales hilus false vills malls quillaias oils guiles kills bialys bawls nils goals balas phials poilus quillais miles viols koalas reoils silos mauls bialis piles heals also ceilis mailes vials pills wiles balls alls bals balsa rales voiles foals valse pals seals wheals wales dals wauls dills rials weals sales tils deils chiels salsa chilis shales shawls tiles sheilas ceils shills sials yills
rail rale prill oral grille grail frill brill brail frail rally rawly real realia really trail drill rial riel aril orally krill grill frilly frailly braille brillo rile roily roil rille rill riley drily drail trill