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.
skats skates skits scats scatts squats skeets skites sockets sickouts scots skids scads sects scuts scoots scouts scutes squads skidoos scotties skiddoos
kats skats ikats katas loggats wyliecoats gaits coats coatis equates cats goats legates coacts pickets nougats locates rackets recoats rockets scatts ligates cates qats sockets diquats ducats tacts tuckets pacts liquates gates jackets squats dockets agates skits lockets gats coequates buckets facts vacates kits acts tickets tackets fugatos legatos beckets loquats negates packets peacoats pockets reacts rickets scats skates wickets
skat skate scat scatt scatty skit skite