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.
sulks sulkies silks slacks sleeks slakes slicks sulcus silkies selkies salukis slags slogs slugs sawlogs silicas siliques siliquose siliquous
bulks sulks hulks baulks caulks yelks whelks kliks tilaks milks talukas lucks leks salukis beyliks plucks bilks folksy walks balks folks chalks silks holks polkas kulaks flukes ilks talks elks taluks clucks calks yolks
sulk sulky selkie silk silkie silky slake soullike suslik