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.
slags slogs slugs slacks slakes sawlogs silicas sulks silks sulcus sleeks slicks salukis selkies silkies sulkies siliques siliquose siliquous
lags gulags clags flags slags sawlogs algas plugs lugs flogs logs slogs glugs dialogs bowlegs tilaks kulaks belgas vulgus galagos valgus lilacs blogs polkas cologs clogs slugs legs duologs lacs shellacs
slag slaggy slack slake slog slug