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.
cloaks clacks clocks cloacas calks clags clogs clucks clicks cologs caulks kulaks cleeks colugos cloques claques calicos killocks calicoes cowlicks kliks kilogauss collogues gulags colics colleagues colloquies klicks gloggs gleeks calques cliques galagos glucose kylikes gallicas glaucous killicks
cloaks lacks clocks holks clacks lakhs leaks folks looks balks slakes locks rowlocks talookas relocks walks pollacks shellacks palookas shylocks kulaks blacks bleaks slacks lakes hillocks calks flakes flacks flocks bollocks blokes bullocks blocks relooks talks pollocks tilaks placks chalks mullocks shlocks killocks yolks
cloaca cloacae cloak clack clag claque clock clog cloggy cloque colog eclogue