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.
sagos sags sagas segos saigas sacs zags segs skas socas soaks sakes souks sooks scows sacks sikas skuas socks sokes sakis segues zygose squaws sickos scouse sox soukous sax sukkahs sequoias secs sics skis suks suqs
sagos dagos gos ags makos peags vagus egos fags rugous rugosa raggs jaggs zygose kagus bigos lags gogos cacaos jags goys tacos wags chigoes shakos mags quags segos goos dagoes logos magus hags agas sagas rugose nags ragas rags bags zags guacos gags goas goes sags dags tags chegoes shags yags
sago sag saga saggy saiga sego