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.
siglos skills squills sickles skilless squillas sicklies secalose seagulls zoogloeas cyclos skoals scalls scowls skulls sculls socles skells sokols scales squalls squeals suckles zocalos sequels sockless suckless zoogleas
siglos callose guls kolos joggles googols gaggles legals iglus gigolos higgles niggles moguls raggles fugles bugloss reglows beagles wriggles bogles secalose acaulous zocalos acaulose dayglows acoelous waggles kilos gloss callous haggles gallous gallows cloys juggles guggles goggles miggles giggles jiggles igloos ogles nickelous gals regloss eagles rugulose boggles cyclos bugles glows calos daggles close toggles bacalaos wiggles